"Gaon Weekly Album Chart". Gaon Chart (in Korean). Korea Music Content Industry Association. Archived from the original on March 26, 2015. Retrieved February 2, 2015.
"Hello (2014)". March 15–21, 2020. Archived from the original on 2015-02-03. Retrieved 2020-03-26.
"2020년 11월 Album Chart" [November 2020 Album Chart]. Gaon Music Chart (in Korean). Archived from the original on December 10, 2020. Retrieved December 10, 2020.
2021년 Album Chart [2021 Yearly Album Chart]. Gaon Music Chart (in Korean). Archived from the original on January 7, 2022. Retrieved January 7, 2022.
C., Daniel (June 21, 2019). "Gaon's 관찰노트" [Gaon's Observation Notes] (in Korean). Gaon Music Chart. Archived from the original on September 20, 2019. Retrieved June 21, 2019.
オリコン週間 アルバムランキング 年月日~年月日 [Weekly Album Ranking (dated June 21, 2021)] (in Japanese). Oricon. June 21, 2021. Archived from the original on June 16, 2021. Retrieved June 16, 2021.
"마마무, 6월 2일 완전체 컴백". news.naver.com (in Korean). 2021-05-18. Archived from the original on 2021-05-17. Retrieved 2021-05-18.
"Gaon Weekly Album Chart". Gaon Chart (in Korean). Korea Music Content Industry Association. Archived from the original on March 26, 2015. Retrieved February 2, 2015.
"Hello (2014)". March 15–21, 2020. Archived from the original on 2015-02-03. Retrieved 2020-03-26.
"2020년 11월 Album Chart" [November 2020 Album Chart]. Gaon Music Chart (in Korean). Archived from the original on December 10, 2020. Retrieved December 10, 2020.
オリコン週間 アルバムランキング 年月日~年月日 [Weekly Album Ranking (dated June 21, 2021)] (in Japanese). Oricon. June 21, 2021. Archived from the original on June 16, 2021. Retrieved June 16, 2021.
C., Daniel (June 21, 2019). "Gaon's 관찰노트" [Gaon's Observation Notes] (in Korean). Gaon Music Chart. Archived from the original on September 20, 2019. Retrieved June 21, 2019.
Cumulative sales of "Décalcomanie (Japanese version)":