References analysis of the Wikipedia article "Girl's Day discography" in the English version

gaonchart.co.kr

"Gaon Album Chart". Gaon Chart (in Korean). Korea Music Content Industry Association. Archived from the original on September 22, 2013. Retrieved April 16, 2014.

"2013년 Album Chart (국내)". Gaon Chart (in Korean). Korea Music Content Industry Association. Archived from the original on October 8, 2014. Retrieved October 9, 2014.

"2015년 07월 Album Chart". Gaon Chart (in Korean). Korea Music Content Industry Association. Retrieved August 6, 2015.
Cumulative sales for Female President:
- "2013년 06월 Album Chart (국내)". Gaon Chart (in Korean). Korea Music Content Industry Association. Archived from the original on October 15, 2014. Retrieved October 9, 2014.
- "2011년 07월 Album Chart". Gaon Chart (in Korean). Korea Music Content Industry Association. Archived from the original on October 15, 2014. Retrieved October 9, 2014.
- "2012년 04월 Album Chart". Gaon Chart (in Korean). Korea Music Content Industry Association. Archived from the original on September 13, 2014. Retrieved October 9, 2014.
- "2014년 09월 Album Chart (국내)". Gaon Chart. Korea Music Content Industry Association. Archived from the original on October 15, 2014. Retrieved October 9, 2014.
- Total sales for Everyday 4":
  - 2014년 총결산 Album Chart [2014 Year-End Album Chart]. Gaon Chart (in Korean). Korea Music Content Industry Association. Archived from the original on June 28, 2015. Retrieved June 27, 2015.
  - "Circle Chart" 2018년 가온차트 정책 변경 공지 [2018 Gaon Chart Policy Change Notice]. Gaon Music Chart. December 20, 2017. Retrieved October 19, 2019.
  - "Circle Chart" 2017년 04월 Album Chart [April 2017 Album Chart]. Gaon Music Chart (in Korean). Retrieved October 19, 2019.
  - "Gaon Digital Chart". Gaon Chart (in Korean). Korea Music Content Industry Association. Archived from the original on February 8, 2014. Retrieved April 16, 2014.
  - "Gaon Download Chart – 2011 Year End Chart". Gaon Music Chart (in Korean). Archived from the original on October 17, 2013. Retrieved January 16, 2014.
  - "2011년 Download Chart" [2011 Download Chart]. Gaon Music Chart (in Korean). p. 3. Archived from the original on August 15, 2016. Retrieved August 14, 2018.
  - "2012년 Download Chart" [2012 Download Chart]. Gaon Music Chart (in Korean). p. 3. Archived from the original on August 15, 2016. Retrieved August 14, 2018.
  - Cumulative sales for "Blue Rain 2012":
    - "Gaon Download Chart – August 2012". Gaon Music Chart. Archived from the original on April 16, 2014. Retrieved January 16, 2014.
    - Cumulative sales for "Don't Forget Me":
      - "2012년 Download Chart" [2012 Download Chart]. Gaon Music Chart (in Korean). p. 3. Archived from the original on August 15, 2016. Retrieved August 14, 2018.
      - Cumulative sales for "White Day":
        "Gaon Download Chart – 2013년 3월 1주차 (February 24, 2013 - March 2, 2013)". Gaon Music Chart. Archived from the original on April 16, 2014. Retrieved April 16, 2014.
        "Gaon Download Chart – 2013 Year End Chart". Gaon Music Chart (in Korean). Archived from the original on October 19, 2014. Retrieved January 16, 2014.
        "Female President" cumulative sales:
        "Gaon Download Chart – 2013 Year End Chart". Gaon Music Chart (in Korean). Archived from the original on October 19, 2014. Retrieved January 16, 2014.
        "2013년 Download Chart" [2013 Download Chart]. Gaon Music Chart (in Korean). p. 4. Archived from the original on August 15, 2016. Retrieved August 14, 2018.
        "Gaon Download Chart – October 2013". Gaon Music Chart. Archived from the original on February 2, 2014. Retrieved January 16, 2014.
        Cumulative sales for "Something":
        "Circle Chart" 2014년 Download Chart [2014 Download Chart]. Gaon Music Chart (in Korean). Retrieved August 14, 2018.
        Cumulative sales for "Darling":
        "Circle Chart" 2014년 Download Chart [2014 Download Chart]. Gaon Music Chart (in Korean). Retrieved August 14, 2018.
        Cumulative sales for "보고싶어 (I Miss You)":
        "2014년 Download Chart" [2014 Download Chart]. Gaon Music Chart (in Korean). p. 2. Archived from the original on August 15, 2016. Retrieved August 14, 2018.
        "2015년 Download Chart" [2015 Download Chart]. Gaon Music Chart (in Korean). p. 3. Archived from the original on August 15, 2016. Retrieved August 14, 2018.
        Cumulative sales for "Ring My Bell":
        "2015년 Download Chart" [2015 Download Chart]. Gaon Music Chart (in Korean). Retrieved August 14, 2018.
        "2017년 상반기 결산 Download Chart" [First half of 2017 Download Chart]. Gaon Music Chart (in Korean). Archived from the original on August 18, 2017. Retrieved August 14, 2018.
        "국내 대표 음악 차트 가온차트!". Gaon Chart. Retrieved June 21, 2017.
        "국내 대표 음악 차트 가온차트!". Gaon Chart. Retrieved June 21, 2017.
        "2017년 13주차 Download Chart" [Week 13 of 2017 Download Chart]. Gaon Music Chart (in Korean). Retrieved August 14, 2018.

metaoloz.com

"GIRLSDAY ' Nothing Last' MV". Metaoloz Creative Group. April 3, 2014. Retrieved September 24, 2014.

"GIRLSDAY '반짝반짝' (Twinkle Twinkle) MV". Metaoloz Creative Group. April 3, 2014. Retrieved September 24, 2014.

"GIRLSDAY '한번만안아줘' (Hug me once) MV". Metaoloz Creative Group. April 3, 2014. Retrieved September 24, 2014.

"GIRLSDAY 'Oh! My God' M/V". Metaoloz Creative Group. April 7, 2014. Retrieved September 24, 2014.

web.archive.org

"Gaon Album Chart". Gaon Chart (in Korean). Korea Music Content Industry Association. Archived from the original on September 22, 2013. Retrieved April 16, 2014.

"2013년 Album Chart (국내)". Gaon Chart (in Korean). Korea Music Content Industry Association. Archived from the original on October 8, 2014. Retrieved October 9, 2014.

Cumulative sales for Female President:

"2013년 06월 Album Chart (국내)". Gaon Chart (in Korean). Korea Music Content Industry Association. Archived from the original on October 15, 2014. Retrieved October 9, 2014.
"2011년 07월 Album Chart". Gaon Chart (in Korean). Korea Music Content Industry Association. Archived from the original on October 15, 2014. Retrieved October 9, 2014.
"2012년 04월 Album Chart". Gaon Chart (in Korean). Korea Music Content Industry Association. Archived from the original on September 13, 2014. Retrieved October 9, 2014.
"2014년 09월 Album Chart (국내)". Gaon Chart. Korea Music Content Industry Association. Archived from the original on October 15, 2014. Retrieved October 9, 2014.
Total sales for Everyday 4":
- 2014년 총결산 Album Chart [2014 Year-End Album Chart]. Gaon Chart (in Korean). Korea Music Content Industry Association. Archived from the original on June 28, 2015. Retrieved June 27, 2015.
- "Girl's Day album to do away with CD". Xinmsn Entertainment. Mediacorp. October 8, 2014. Archived from the original on October 11, 2014. Retrieved October 8, 2014.
- "Gaon Digital Chart". Gaon Chart (in Korean). Korea Music Content Industry Association. Archived from the original on February 8, 2014. Retrieved April 16, 2014.
- "Girl's Day Chart History - K-pop Hot 100". Billboard. Retrieved August 14, 2018.
  - "Blue Rain 2012". Billboard. September 15, 2012. Archived from the original on August 16, 2018.
  - "Gaon Download Chart – 2011 Year End Chart". Gaon Music Chart (in Korean). Archived from the original on October 17, 2013. Retrieved January 16, 2014.
  - "2011년 Download Chart" [2011 Download Chart]. Gaon Music Chart (in Korean). p. 3. Archived from the original on August 15, 2016. Retrieved August 14, 2018.
  - "2012년 Download Chart" [2012 Download Chart]. Gaon Music Chart (in Korean). p. 3. Archived from the original on August 15, 2016. Retrieved August 14, 2018.
  - Cumulative sales for "Blue Rain 2012":
    - "Gaon Download Chart – August 2012". Gaon Music Chart. Archived from the original on April 16, 2014. Retrieved January 16, 2014.
    - Cumulative sales for "Don't Forget Me":
      - "2012년 Download Chart" [2012 Download Chart]. Gaon Music Chart (in Korean). p. 3. Archived from the original on August 15, 2016. Retrieved August 14, 2018.
      - Cumulative sales for "White Day":
        "Gaon Download Chart – 2013년 3월 1주차 (February 24, 2013 - March 2, 2013)". Gaon Music Chart. Archived from the original on April 16, 2014. Retrieved April 16, 2014.
        "Gaon Download Chart – 2013 Year End Chart". Gaon Music Chart (in Korean). Archived from the original on October 19, 2014. Retrieved January 16, 2014.
        "Female President" cumulative sales:
        "Gaon Download Chart – 2013 Year End Chart". Gaon Music Chart (in Korean). Archived from the original on October 19, 2014. Retrieved January 16, 2014.
        "2013년 Download Chart" [2013 Download Chart]. Gaon Music Chart (in Korean). p. 4. Archived from the original on August 15, 2016. Retrieved August 14, 2018.
        "Gaon Download Chart – October 2013". Gaon Music Chart. Archived from the original on February 2, 2014. Retrieved January 16, 2014.
        Cumulative sales for "보고싶어 (I Miss You)":
        "2014년 Download Chart" [2014 Download Chart]. Gaon Music Chart (in Korean). p. 2. Archived from the original on August 15, 2016. Retrieved August 14, 2018.
        "2015년 Download Chart" [2015 Download Chart]. Gaon Music Chart (in Korean). p. 3. Archived from the original on August 15, 2016. Retrieved August 14, 2018.
        週間 CDシングルランキング - 2015年10月12日付 [Weekly CD Single Ranking - October 12, 2015]. Oricon Style (in Japanese). Archived from the original on October 8, 2015. Retrieved October 19, 2019.
        "2017년 상반기 결산 Download Chart" [First half of 2017 Download Chart]. Gaon Music Chart (in Korean). Archived from the original on August 18, 2017. Retrieved August 14, 2018.
        "HOOXI THE BEGINNING | W-Foundation". Archived from the original on July 13, 2017.
        "GIRL'S DAY 기대해 Music Video". Monochrom. Archived from the original on February 19, 2015. Retrieved September 24, 2014.

Girl's Day discography (English Wikipedia)

1dream1korea.com

billboard.com

gaonchart.co.kr

gcrfund.org

girlsdaydaily.com

heraldcorp.com

biz.heraldcorp.com

metaoloz.com

monocrom.co.kr

msn.com

xin.msn.com

oricon.co.jp

oricon.co.jp

ranking.oricon.co.jp

rubi.co.kr

metaoloz.rubi.co.kr

vimeo.com

web.archive.org