Beatles for Sale (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Beatles for Sale" in English language version.

refsWebsite

Global rank English rank

34archive.org

6^th place

31web.archive.org

1^st place

6allmusic.com

25^th place

22^nd place

6books.google.com

3^rd place

3officialcharts.com

76^th place

69^th place

2bbc.co.uk

8^th place

10^th place

2theofficialcharts.com

2,893^rd place

1,992^nd place

2ultratop.be

257^th place

219^th place

1archive.today

14^th place

1pitchfork.com

159^th place

112^th place

1worldcat.org

5^th place

1smh.com.au

132^nd place

96^th place

1worldcharts.co.uk

low place

1norwegiancharts.com

1,106^th place

702^nd place

1hitsallertijden.nl

low place

1theguardian.com

12^th place

11^th place

1reuters.com

49^th place

47^th place

1avclub.com

136^th place

93^rd place

1blender.com

3,836^th place

2,252^nd place

1consequenceofsound.net

1,633^rd place

974^th place

1telegraph.co.uk

30^th place

24^th place

1music-story.com

low place

1pastemagazine.com

661^st place

399^th place

1richieunterberger.com

low place

9,626^th place

1rocksbackpages.com

4,250^th place

2,270^th place

1rocklistmusic.co.uk

3,114^th place

2,206^th place

1chicagotribune.com

95^th place

70^th place

1offiziellecharts.de

190^th place

325^th place

1dutchcharts.nl

400^th place

259^th place

1austriancharts.at

276^th place

477^th place

1ifpi.fi

1,413^th place

1,091^st place

1italiancharts.com

1,739^th place

1,547^th place

1charts.nz

720^th place

419^th place

1spanishcharts.com

2,368^th place

1,676^th place

1swedishcharts.com

659^th place

483^rd place

1swisscharts.com

630^th place

421^st place

1capif.org.ar

7,155^th place

5,957^th place

1dropbox.com

1,209^th place

689^th place

1musiccanada.com

767^th place

503^rd place

1nztop40.co.nz

777^th place

469^th place

1bpi.co.uk

292^nd place

226^th place

1riaa.com

162^nd place

128^th place

allmusic.com

Erlewine, Stephen Thomas. "The Beatles Beatles for Sale". AllMusic. Archived from the original on 9 May 2017. Retrieved 8 April 2017.
Unterberger, Richie. "The Beatles 'I Feel Fine'". AllMusic. Archived from the original on 10 May 2012. Retrieved 4 April 2017.
Unterberger 2005a. Unterberger, Richie (2005a). "Review of "I'm A Loser"". AllMusic. Archived from the original on 1 May 2011. Retrieved 7 November 2005.
Unterberger 2005b. Unterberger, Richie (2005b). "Review of "Baby's in Black"". AllMusic. Retrieved 7 November 2005.
Unterberger, Richie. "The Beatles 'Eight Days a Week'". AllMusic. Archived from the original on 11 April 2017. Retrieved 10 April 2017.
Unterberger 2005e. Unterberger, Richie (2005e). "Review of "Every Little Thing"". AllMusic. Retrieved 7 November 2005.

archive.org

Riley 2002, p. 118. Riley, Tim (2002) [1988]. Tell Me Why – The Beatles: Album by Album, Song by Song, the Sixties and After. Cambridge, MA: Da Capo Press. ISBN 978-0-306-81120-3.
MacDonald 2005, p. 129. MacDonald, Ian (2005). Revolution in the Head: The Beatles' Records and the Sixties (2nd rev. edn). Chicago, IL: Chicago Review Press. ISBN 978-1-55652-733-3.
Schaffner 1978, pp. 46–47. Schaffner, Nicholas (1978). The Beatles Forever. New York, NY: McGraw-Hill. ISBN 0-07-055087-5.
The Beatles 2000, p. 161. The Beatles (2000). The Beatles Anthology. San Francisco, CA: Chronicle Books. ISBN 978-0-8118-2684-6.
Everett 2001, p. 253. Everett, Walter (2001). The Beatles as Musicians: The Quarry Men through Rubber Soul. New York, NY: Oxford University Press. ISBN 0-19-514105-9.
Everett 2001, p. 270. Everett, Walter (2001). The Beatles as Musicians: The Quarry Men through Rubber Soul. New York, NY: Oxford University Press. ISBN 0-19-514105-9.
Everett 2001, p. 248. Everett, Walter (2001). The Beatles as Musicians: The Quarry Men through Rubber Soul. New York, NY: Oxford University Press. ISBN 0-19-514105-9.
Everett 2001, p. 252. Everett, Walter (2001). The Beatles as Musicians: The Quarry Men through Rubber Soul. New York, NY: Oxford University Press. ISBN 0-19-514105-9.
Riley 2002, p. 119. Riley, Tim (2002) [1988]. Tell Me Why – The Beatles: Album by Album, Song by Song, the Sixties and After. Cambridge, MA: Da Capo Press. ISBN 978-0-306-81120-3.
MacDonald 2005, p. 155. MacDonald, Ian (2005). Revolution in the Head: The Beatles' Records and the Sixties (2nd rev. edn). Chicago, IL: Chicago Review Press. ISBN 978-1-55652-733-3.
The Beatles 2000, p. 160. The Beatles (2000). The Beatles Anthology. San Francisco, CA: Chronicle Books. ISBN 978-0-8118-2684-6.
Schaffner 1978, pp. 39–40. Schaffner, Nicholas (1978). The Beatles Forever. New York, NY: McGraw-Hill. ISBN 0-07-055087-5.
MacDonald 2005, pp. 131–32. MacDonald, Ian (2005). Revolution in the Head: The Beatles' Records and the Sixties (2nd rev. edn). Chicago, IL: Chicago Review Press. ISBN 978-1-55652-733-3.
MacDonald 2005, p. 129fn. MacDonald, Ian (2005). Revolution in the Head: The Beatles' Records and the Sixties (2nd rev. edn). Chicago, IL: Chicago Review Press. ISBN 978-1-55652-733-3.
MacDonald 2005, p. 131. MacDonald, Ian (2005). Revolution in the Head: The Beatles' Records and the Sixties (2nd rev. edn). Chicago, IL: Chicago Review Press. ISBN 978-1-55652-733-3.
MacDonald 2005, p. 132. MacDonald, Ian (2005). Revolution in the Head: The Beatles' Records and the Sixties (2nd rev. edn). Chicago, IL: Chicago Review Press. ISBN 978-1-55652-733-3.
MacDonald 2005, p. 105. MacDonald, Ian (2005). Revolution in the Head: The Beatles' Records and the Sixties (2nd rev. edn). Chicago, IL: Chicago Review Press. ISBN 978-1-55652-733-3.
Riley 2002, pp. 118–19. Riley, Tim (2002) [1988]. Tell Me Why – The Beatles: Album by Album, Song by Song, the Sixties and After. Cambridge, MA: Da Capo Press. ISBN 978-0-306-81120-3.
Miles 1997, p. 174. Miles, Barry (1997). Paul McCartney: Many Years From Now. New York: Henry Holt and Company. ISBN 0-8050-5249-6.
Everett 2001, pp. 258, 403. Everett, Walter (2001). The Beatles as Musicians: The Quarry Men through Rubber Soul. New York, NY: Oxford University Press. ISBN 0-19-514105-9.
MacDonald 2005, pp. 129–30. MacDonald, Ian (2005). Revolution in the Head: The Beatles' Records and the Sixties (2nd rev. edn). Chicago, IL: Chicago Review Press. ISBN 978-1-55652-733-3.
MacDonald 2005, pp. 131, 180. MacDonald, Ian (2005). Revolution in the Head: The Beatles' Records and the Sixties (2nd rev. edn). Chicago, IL: Chicago Review Press. ISBN 978-1-55652-733-3.
Everett 2001, p. 260. Everett, Walter (2001). The Beatles as Musicians: The Quarry Men through Rubber Soul. New York, NY: Oxford University Press. ISBN 0-19-514105-9.
MacDonald 2005, pp. 130–31. MacDonald, Ian (2005). Revolution in the Head: The Beatles' Records and the Sixties (2nd rev. edn). Chicago, IL: Chicago Review Press. ISBN 978-1-55652-733-3.
Miles 1997, pp. 175–176. Miles, Barry (1997). Paul McCartney: Many Years From Now. New York: Henry Holt and Company. ISBN 0-8050-5249-6.
Riley 2002, p. 115. Riley, Tim (2002) [1988]. Tell Me Why – The Beatles: Album by Album, Song by Song, the Sixties and After. Cambridge, MA: Da Capo Press. ISBN 978-0-306-81120-3.
Talevski 1999, p. 415. Talevski, Nick (1999). The Encyclopedia of Rock Obituaries. London: Omnibus Press. ISBN 0-7119-7548-5.
Castleman & Podrazik 1976, p. 41. Castleman, Harry; Podrazik, Walter J. (1976). All Together Now: The First Complete Beatles Discography 1961–1975. New York, NY: Ballantine Books. ISBN 0-345-25680-8.
Schaffner 1978, p. 41. Schaffner, Nicholas (1978). The Beatles Forever. New York, NY: McGraw-Hill. ISBN 0-07-055087-5.
Castleman & Podrazik 1976, pp. 41–42. Castleman, Harry; Podrazik, Walter J. (1976). All Together Now: The First Complete Beatles Discography 1961–1975. New York, NY: Ballantine Books. ISBN 0-345-25680-8.
Brackett & Hoard 2004, p. 51. Brackett, Nathan; Hoard, Christian, eds. (2004). The New Rolling Stone Album Guide (4th edn). New York, NY: Fireside/Simon & Schuster. ISBN 0-7432-0169-8.
Brackett & Hoard 2004, p. 52. Brackett, Nathan; Hoard, Christian, eds. (2004). The New Rolling Stone Album Guide (4th edn). New York, NY: Fireside/Simon & Schuster. ISBN 0-7432-0169-8.
MacDonald 2005, pp. 122–41. MacDonald, Ian (2005). Revolution in the Head: The Beatles' Records and the Sixties (2nd rev. edn). Chicago, IL: Chicago Review Press. ISBN 978-1-55652-733-3.
MacDonald 2005, pp. 122–41; except "I Don't Want to Spoil the Party": Winn 2008, p. 273. MacDonald, Ian (2005). Revolution in the Head: The Beatles' Records and the Sixties (2nd rev. edn). Chicago, IL: Chicago Review Press. ISBN 978-1-55652-733-3. Winn, John C. (2008). Way Beyond Compare: The Beatles' Recorded Legacy, Volume One, 1962–1965. New York, NY: Three Rivers Press. ISBN 978-0-307-45239-9.

archive.today

Erlewine, Stephen Thomas. "The Beatles Beatles for Sale". AllMusic. Archived from the original on 9 May 2017. Retrieved 8 April 2017.

austriancharts.at

"Austriancharts.at – The Beatles – Beatles for Sale" (in German). Hung Medien. Retrieved 12 June 2016.

avclub.com

Klosterman, Chuck (8 September 2009). "Chuck Klosterman Repeats The Beatles". The A.V. Club. Chicago. Archived from the original on 22 May 2013. Retrieved 26 May 2013.

bbc.co.uk

Quantick, David (2010). "The Beatles Beatles for Sale Review". BBC Music. Archived from the original on 26 May 2017. Retrieved 11 April 2017.
"Beatles albums finally go platinum". British Phonographic Industry. BBC News. 2 September 2013. Archived from the original on 10 April 2014. Retrieved 4 September 2013.

blender.com

Du Noyer, Paul (2004). "The Beatles Beatles for Sale". Blender. Archived from the original on 4 May 2006. Retrieved 27 June 2017.

books.google.com

Philo 2015, p. 85. Philo, Simon (2015). British Invasion: The Crosscurrents of Musical Influence. Lanham, MD: Rowman & Littlefield. ISBN 978-0-8108-8626-1. Archived from the original on 7 December 2019. Retrieved 17 May 2019.
Philo 2015, p. 75. Philo, Simon (2015). British Invasion: The Crosscurrents of Musical Influence. Lanham, MD: Rowman & Littlefield. ISBN 978-0-8108-8626-1. Archived from the original on 7 December 2019. Retrieved 17 May 2019.
Philo 2015, pp. 78–79. Philo, Simon (2015). British Invasion: The Crosscurrents of Musical Influence. Lanham, MD: Rowman & Littlefield. ISBN 978-0-8108-8626-1. Archived from the original on 7 December 2019. Retrieved 17 May 2019.
Philo 2015, pp. 84–85. Philo, Simon (2015). British Invasion: The Crosscurrents of Musical Influence. Lanham, MD: Rowman & Littlefield. ISBN 978-0-8108-8626-1. Archived from the original on 7 December 2019. Retrieved 17 May 2019.
Philo 2015, p. 79. Philo, Simon (2015). British Invasion: The Crosscurrents of Musical Influence. Lanham, MD: Rowman & Littlefield. ISBN 978-0-8108-8626-1. Archived from the original on 7 December 2019. Retrieved 17 May 2019.
Hutchins, Chris (26 December 1964). "Beatles Scoring High in U.K. on Single, Album, New Film Set". Billboard. p. 8. Retrieved 30 January 2022 – via Google Books.

bpi.co.uk

"British album certifications – The Beatles – Beatles for Sale". British Phonographic Industry. Retrieved 15 September 2013.

capif.org.ar

"Discos de oro y platino" (in Spanish). Cámara Argentina de Productores de Fonogramas y Videogramas. Archived from the original on 6 July 2011. Retrieved 29 June 2021.

charts.nz

"Charts.nz – The Beatles – Beatles for Sale". Hung Medien. Retrieved 12 June 2016.

chicagotribune.com

Taylor, Jonathan (25 March 1987). "Pop Critics Pick Rock's Top 100". Los Angeles Daily News. Archived from the original on 11 November 2019. Retrieved 12 November 2019 – via chicagotribune.com.

consequenceofsound.net

Balderrama, Anthony (17 September 2009). "Album Review: The Beatles – Beatles for Sale [Remastered]". Consequence of Sound. Archived from the original on 2 June 2013. Retrieved 11 January 2013.

dropbox.com

"ARIA Charts – Accreditations – 2009 Albums" (PDF). Australian Recording Industry Association. Retrieved 15 September 2013.

dutchcharts.nl

"Dutchcharts.nl – The Beatles – Beatles for Sale" (in Dutch). Hung Medien. Retrieved 12 June 2016.

hitsallertijden.nl

"Swedish Charts 1962 – March 1966/Kvällstoppen – Listresultaten vecka för vecka > Mars 1965" (PDF) (in Swedish). hitsallertijden.nl. Archived (PDF) from the original on 23 March 2012. Retrieved 27 June 2018.

ifpi.fi

"The Beatles: Beatles for Sale" (in Finnish). Musiikkituottajat – IFPI Finland. Retrieved 12 June 2016.

italiancharts.com

"Italiancharts.com – The Beatles – Beatles for Sale". Hung Medien. Retrieved 12 June 2016.

music-story.com

"The Beatles > Discographie de The Beatles (in French)". Music Story. Archived from the original on 19 June 2013. Retrieved 5 April 2017.

musiccanada.com

"Canadian album certifications – The Beatles – Beatles for Sale". Music Canada. Retrieved 15 September 2013.

norwegiancharts.com

"The Beatles – Rock and Roll Music (song)". norwegiancharts.com. 23 April 2019. Archived from the original on 5 August 2020. Retrieved 1 January 2020.

nztop40.co.nz

"New Zealand album certifications – The Beatles – Beatles For Sale". Recorded Music NZ. Retrieved 14 April 2020.

officialcharts.com

"All The Number 1 Albums". Official Charts Company. Archived from the original on 7 October 2014. Retrieved 8 October 2019.
"Beatles | Artist | Official Charts". UK Albums Chart. Retrieved 16 May 2016.
"Beatles for Sale (1987 Version)" > "Chart Facts". Official Charts Company. Archived from the original on 9 August 2017. Retrieved 28 June 2017.

offiziellecharts.de

"Offiziellecharts.de – The Beatles – Beatles for Sale" (in German). GfK Entertainment Charts. Retrieved 16 May 2016.

pastemagazine.com

Kemp, Mark (8 September 2009). "The Beatles: The Long and Winding Repertoire". Paste. p. 59. Archived from the original on 23 October 2013. Retrieved 8 April 2017.

pitchfork.com

Ewing, Tom (8 September 2009). "The Beatles: Beatles for Sale Album Review". Pitchfork. Archived from the original on 9 November 2020. Retrieved 11 January 2013.

reuters.com

Collett-White, Mike (7 April 2009). "Original Beatles digitally remastered". Reuters. Archived from the original on 30 November 2009. Retrieved 10 April 2017.

riaa.com

"American album certifications – The Beatles – Beatles For Sale". Recording Industry Association of America. Retrieved 15 September 2013.

richieunterberger.com

Unterberger, Richie (2001). "Folk Rock: An Overview". richieunterberger.com. Archived from the original on 9 November 2013. Retrieved 11 April 2017.

rocklistmusic.co.uk

"The World Critic Lists". rocklistmusic.co.uk. Archived from the original on 5 May 2017. Retrieved 5 June 2017.

rocksbackpages.com

Williams, Richard (28 February 1970). "Genius, Hard Work and Steve Stills". Melody Maker. Available at Rock's Backpages Archived 1 January 2020 at the Wayback Machine (subscription required).

smh.com.au

Sawyer, Mark (6 October 2012). "Fixing a hole – the great lost Aussie Beatles collection". The Sydney Morning Herald. Retrieved 13 April 2017.

spanishcharts.com

"Spanishcharts.com – The Beatles – Beatles for Sale". Hung Medien. Retrieved 12 June 2016.

swedishcharts.com

"Swedishcharts.com – The Beatles – Beatles for Sale". Hung Medien. Retrieved 12 June 2016.

swisscharts.com

"Swisscharts.com – The Beatles – Beatles for Sale". Hung Medien. Retrieved 12 June 2016.

telegraph.co.uk

McCormick, Neil (4 September 2009). "The Beatles – Beatles For Sale, review". The Daily Telegraph. London. Archived from the original on 14 August 2012. Retrieved 11 January 2013.

theguardian.com

Datablog (9 September 2009). "The Beatles: Every album and single, with its chart position". theguardian.com. Archived from the original on 27 May 2014. Retrieved 8 November 2019.

theofficialcharts.com

Mawer, Sharon (May 2007). "Album Chart History: 1965". The Official UK Charts Company. Archived from the original on 17 December 2007. Retrieved 8 October 2019.
Mawer, Sharon (May 2007). "Album Chart History: 1964". The Official UK Charts Company. Archived from the original on 17 December 2007. Retrieved 1 January 2020.

ultratop.be

"Ultratop.be – The Beatles – Beatles for Sale" (in Dutch). Hung Medien. Retrieved 12 June 2016.
"Ultratop.be – The Beatles – Beatles for Sale" (in French). Hung Medien. Retrieved 12 June 2016.

web.archive.org

Ewing, Tom (8 September 2009). "The Beatles: Beatles for Sale Album Review". Pitchfork. Archived from the original on 9 November 2020. Retrieved 11 January 2013.
Philo 2015, p. 85. Philo, Simon (2015). British Invasion: The Crosscurrents of Musical Influence. Lanham, MD: Rowman & Littlefield. ISBN 978-0-8108-8626-1. Archived from the original on 7 December 2019. Retrieved 17 May 2019.
Philo 2015, p. 75. Philo, Simon (2015). British Invasion: The Crosscurrents of Musical Influence. Lanham, MD: Rowman & Littlefield. ISBN 978-0-8108-8626-1. Archived from the original on 7 December 2019. Retrieved 17 May 2019.
Philo 2015, pp. 78–79. Philo, Simon (2015). British Invasion: The Crosscurrents of Musical Influence. Lanham, MD: Rowman & Littlefield. ISBN 978-0-8108-8626-1. Archived from the original on 7 December 2019. Retrieved 17 May 2019.
Quantick, David (2010). "The Beatles Beatles for Sale Review". BBC Music. Archived from the original on 26 May 2017. Retrieved 11 April 2017.
Unterberger, Richie. "The Beatles 'I Feel Fine'". AllMusic. Archived from the original on 10 May 2012. Retrieved 4 April 2017.
Unterberger 2005a. Unterberger, Richie (2005a). "Review of "I'm A Loser"". AllMusic. Archived from the original on 1 May 2011. Retrieved 7 November 2005.
Unterberger, Richie. "The Beatles 'Eight Days a Week'". AllMusic. Archived from the original on 11 April 2017. Retrieved 10 April 2017.
Philo 2015, pp. 84–85. Philo, Simon (2015). British Invasion: The Crosscurrents of Musical Influence. Lanham, MD: Rowman & Littlefield. ISBN 978-0-8108-8626-1. Archived from the original on 7 December 2019. Retrieved 17 May 2019.
"All The Number 1 Albums". Official Charts Company. Archived from the original on 7 October 2014. Retrieved 8 October 2019.
Philo 2015, p. 79. Philo, Simon (2015). British Invasion: The Crosscurrents of Musical Influence. Lanham, MD: Rowman & Littlefield. ISBN 978-0-8108-8626-1. Archived from the original on 7 December 2019. Retrieved 17 May 2019.
Mawer, Sharon (May 2007). "Album Chart History: 1965". The Official UK Charts Company. Archived from the original on 17 December 2007. Retrieved 8 October 2019.
Mawer, Sharon (May 2007). "Album Chart History: 1964". The Official UK Charts Company. Archived from the original on 17 December 2007. Retrieved 1 January 2020.
"Australian Number One Hits 1960s". World Charts. Archived from the original on 31 July 2013. Retrieved 1 January 2020.
"The Beatles – Rock and Roll Music (song)". norwegiancharts.com. 23 April 2019. Archived from the original on 5 August 2020. Retrieved 1 January 2020.
"Swedish Charts 1962 – March 1966/Kvällstoppen – Listresultaten vecka för vecka > Mars 1965" (PDF) (in Swedish). hitsallertijden.nl. Archived (PDF) from the original on 23 March 2012. Retrieved 27 June 2018.
Datablog (9 September 2009). "The Beatles: Every album and single, with its chart position". theguardian.com. Archived from the original on 27 May 2014. Retrieved 8 November 2019.
Collett-White, Mike (7 April 2009). "Original Beatles digitally remastered". Reuters. Archived from the original on 30 November 2009. Retrieved 10 April 2017.
Klosterman, Chuck (8 September 2009). "Chuck Klosterman Repeats The Beatles". The A.V. Club. Chicago. Archived from the original on 22 May 2013. Retrieved 26 May 2013.
Du Noyer, Paul (2004). "The Beatles Beatles for Sale". Blender. Archived from the original on 4 May 2006. Retrieved 27 June 2017.
Balderrama, Anthony (17 September 2009). "Album Review: The Beatles – Beatles for Sale [Remastered]". Consequence of Sound. Archived from the original on 2 June 2013. Retrieved 11 January 2013.
McCormick, Neil (4 September 2009). "The Beatles – Beatles For Sale, review". The Daily Telegraph. London. Archived from the original on 14 August 2012. Retrieved 11 January 2013.
"The Beatles > Discographie de The Beatles (in French)". Music Story. Archived from the original on 19 June 2013. Retrieved 5 April 2017.
Kemp, Mark (8 September 2009). "The Beatles: The Long and Winding Repertoire". Paste. p. 59. Archived from the original on 23 October 2013. Retrieved 8 April 2017.
Unterberger, Richie (2001). "Folk Rock: An Overview". richieunterberger.com. Archived from the original on 9 November 2013. Retrieved 11 April 2017.
Williams, Richard (28 February 1970). "Genius, Hard Work and Steve Stills". Melody Maker. Available at Rock's Backpages Archived 1 January 2020 at the Wayback Machine (subscription required).
"The World Critic Lists". rocklistmusic.co.uk. Archived from the original on 5 May 2017. Retrieved 5 June 2017.
Taylor, Jonathan (25 March 1987). "Pop Critics Pick Rock's Top 100". Los Angeles Daily News. Archived from the original on 11 November 2019. Retrieved 12 November 2019 – via chicagotribune.com.
"Beatles for Sale (1987 Version)" > "Chart Facts". Official Charts Company. Archived from the original on 9 August 2017. Retrieved 28 June 2017.
"Discos de oro y platino" (in Spanish). Cámara Argentina de Productores de Fonogramas y Videogramas. Archived from the original on 6 July 2011. Retrieved 29 June 2021.
"Beatles albums finally go platinum". British Phonographic Industry. BBC News. 2 September 2013. Archived from the original on 10 April 2014. Retrieved 4 September 2013.

worldcat.org

Hertsgaard, Mark. (1996). A day in the life : the music and artistry of the Beatles. London: Pan Books. ISBN 0-330-33891-9. OCLC 60293710.

worldcharts.co.uk

"Australian Number One Hits 1960s". World Charts. Archived from the original on 31 July 2013. Retrieved 1 January 2020.