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