BMW M20 (English Wikipedia)

BMW AG (ed.): IAA Frankfurt/Main 15.9. bis 25.9.1977, p. 5, retrieved 17 September 2021
"BMW Presse: 47. IAA Frankfurt 1977". bmw-grouparchiv.de. Archived from the original on 18 September 2021. Retrieved 18 September 2021.
"Betriebsanleitung, Serviceheft 518, 520i, 525e, 525i, 528i, 535i, M535i, 524td". bmw-grouparchiv.de. August 1985. Archived from the original on 20 July 2022. Retrieved 18 September 2021.
"Zusatzbetriebsanleitung 525e". bmw-grouparchiv.de (in German). p. 6. Archived from the original on 18 September 2021. Retrieved 19 September 2021.
"BETRIEBSANLEITUNG 316, 318i, 320i, 325e, 325i, 324d". bmw-grouparchiv.de (in German). p. 150. Archived from the original on 19 September 2021. Retrieved 19 September 2021.

bmw-tech.org (Global: low place; English: low place)

"BMW M30". www.bmw-tech.org. Retrieved 2 December 2017.

bmwccbc.org (Global: low place; English: low place)

"Useful info and resources". BMW Car Club of BC. Archived from the original on 2012-06-13.

bmwheaven.com (Global: low place; English: 9,340^th place)

Ilir Dibrani. "BMW Heaven Specification Database - Specifications for BMW 323i E21 (1977-1982)". www.bmwheaven.com.
Dibrani, Ilir. "BMW Heaven Specification Database - Engine specifications for M20 engines". www.bmwheaven.com.

carfolio.com (Global: 2,070^th place; English: 2,620^th place)

"1977 BMW 520".

demon.co.uk (Global: 3,292^nd place; English: 2,192^nd place)

unixnerd.demon.co.uk

John G.Burns. "The UnixNerd's Domain - BMW M20 Six Cylinder Engines". Archived from the original on 2020-02-20. Retrieved 2021-02-01.

e30info.com (Global: low place; English: low place)

"BMW e30 1983-1991 differences between models". www.e30info.com.

e30tech.com (Global: low place; English: low place)

"M20B27 Engine Specs". www.e30tech.com. Archived from the original on 23 September 2017. Retrieved 21 September 2017.

e30world.com (Global: low place; English: low place)

"BMW E30 Specifications". www.e30world.com. Archived from the original on 24 February 2013.

e30zone.net (Global: low place; English: low place)

"325e". www.e30zone.net. Archived from the original on 23 September 2017. Retrieved 21 September 2017.

jalopnik.com (Global: 2,174^th place; English: 1,291^st place)

"Engine Of The Day: BMW M20". www.jalopnik.com. 29 August 2009. Retrieved 18 September 2017.

johnavis.com (Global: low place; English: low place)

bmw3series.johnavis.com

"M50 Engine Technical Information (E36)". www.johnavis.com. Archived from the original on 2017-09-17. Retrieved 18 September 2017.

mywikimotors.com (Global: low place; English: low place)

"BMW M20B20 Engine". www.mywikimotors.com. Archived from the original on 2017-09-15. Retrieved 18 September 2017.

realoem.com (Global: 9,302^nd place; English: 5,034^th place)

"5' E28 520i FUEL INJECTION K-JETRONIC". www.realoem.com. Retrieved 21 September 2017.
"5' E28 520i Control unit L-jetronic". www.realoem.com. Retrieved 21 September 2017.
"5' E28 520i Control unit L-jetronic". www.realoem.com. Retrieved 21 September 2017.
"5' E28 520i Uncoded DME control unit". www.realoem.com. Retrieved 21 September 2017.
"3' E30 325i Uncoded DME control unit". www.realoem.com. Retrieved 21 September 2017.

specs4bmw.com (Global: low place; English: low place)

"BMW E21 3-series Sedan specs | Specs4BMW.com". Archived from the original on 2015-06-27. Retrieved 2015-12-21.

usautoparts.net (Global: low place; English: low place)

"Archived copy". Archived from the original on 2012-01-05. Retrieved 2012-06-05.{{cite web}}: CS1 maint: archived copy as title (link)
"M20 6-cylinder engine". www.usautoparts.net. Archived from the original on 2 May 2014.
"M50 Engine". Archived from the original on 12 May 2012.

web.archive.org (Global: 1^st place; English: 1^st place)

"Archived copy". Archived from the original on 2012-01-05. Retrieved 2012-06-05.{{cite web}}: CS1 maint: archived copy as title (link)
"Useful info and resources". BMW Car Club of BC. Archived from the original on 2012-06-13.
John G.Burns. "The UnixNerd's Domain - BMW M20 Six Cylinder Engines". Archived from the original on 2020-02-20. Retrieved 2021-02-01.
"BMW M20B20 Engine". www.mywikimotors.com. Archived from the original on 2017-09-15. Retrieved 18 September 2017.
"M20 6-cylinder engine". www.usautoparts.net. Archived from the original on 2 May 2014.
"M50 Engine". Archived from the original on 12 May 2012.
"M50 Engine Technical Information (E36)". www.johnavis.com. Archived from the original on 2017-09-17. Retrieved 18 September 2017.
"BMW Presse: 47. IAA Frankfurt 1977". bmw-grouparchiv.de. Archived from the original on 18 September 2021. Retrieved 18 September 2021.
"Betriebsanleitung, Serviceheft 518, 520i, 525e, 525i, 528i, 535i, M535i, 524td". bmw-grouparchiv.de. August 1985. Archived from the original on 20 July 2022. Retrieved 18 September 2021.
"Zusatzbetriebsanleitung 525e". bmw-grouparchiv.de (in German). p. 6. Archived from the original on 18 September 2021. Retrieved 19 September 2021.
"BETRIEBSANLEITUNG 316, 318i, 320i, 325e, 325i, 324d". bmw-grouparchiv.de (in German). p. 150. Archived from the original on 19 September 2021. Retrieved 19 September 2021.
"BMW E21 3-series Sedan specs | Specs4BMW.com". Archived from the original on 2015-06-27. Retrieved 2015-12-21.
"BMW e30 - BMW e30 Club". Archived from the original on 2011-11-26.
"BMW E30 Specifications". www.e30world.com. Archived from the original on 24 February 2013.
"M20B27 Engine Specs". www.e30tech.com. Archived from the original on 23 September 2017. Retrieved 21 September 2017.
"325e". www.e30zone.net. Archived from the original on 23 September 2017. Retrieved 21 September 2017.

wikipedia.org (Global: low place; English: low place)

de.wikipedia.org

Heitz, Rudolf, ed. (1985-08-01). Auto Katalog 1986 (in German). Vol. 29. Stuttgart: Vereinigte Motor-Verlage GmbH & Co. KG. p. 210. 81530/85001.

BMW M20 (English Wikipedia)

autoevolution.com (Global: 2,782nd place; English: 1,794th place)

automobile-catalog.com (Global: 2,539th place; English: 2,615th place)

bmw-grouparchiv.de (Global: 5,170th place; English: 5,847th place)

bmw-tech.org (Global: low place; English: low place)

bmwccbc.org (Global: low place; English: low place)

bmwheaven.com (Global: low place; English: 9,340th place)

carfolio.com (Global: 2,070th place; English: 2,620th place)

demon.co.uk (Global: 3,292nd place; English: 2,192nd place)

unixnerd.demon.co.uk

e30info.com (Global: low place; English: low place)

e30tech.com (Global: low place; English: low place)

e30world.com (Global: low place; English: low place)

e30zone.net (Global: low place; English: low place)

jalopnik.com (Global: 2,174th place; English: 1,291st place)

johnavis.com (Global: low place; English: low place)

bmw3series.johnavis.com

mywikimotors.com (Global: low place; English: low place)

realoem.com (Global: 9,302nd place; English: 5,034th place)

specs4bmw.com (Global: low place; English: low place)

usautoparts.net (Global: low place; English: low place)

web.archive.org (Global: 1st place; English: 1st place)

wikipedia.org (Global: low place; English: low place)

de.wikipedia.org

autoevolution.com (Global: 2,782^nd place; English: 1,794^th place)

automobile-catalog.com (Global: 2,539^th place; English: 2,615^th place)

bmw-grouparchiv.de (Global: 5,170^th place; English: 5,847^th place)

bmwheaven.com (Global: low place; English: 9,340^th place)

carfolio.com (Global: 2,070^th place; English: 2,620^th place)

demon.co.uk (Global: 3,292^nd place; English: 2,192^nd place)

jalopnik.com (Global: 2,174^th place; English: 1,291^st place)

realoem.com (Global: 9,302^nd place; English: 5,034^th place)

web.archive.org (Global: 1^st place; English: 1^st place)