19)Gaon Album Chart (页面存档备份,存于互联网档案馆) #1 (2017.08.20~2017.08.26)Gaon Album Chart (页面存档备份,存于互联网档案馆) #1 〈1X1=1 (TO BE ONE)〉Gaon專輯月榜: (2017.08)Gaon Album Chart
Wanna One to release album on June 4. Kpop Herald. 2018-05-07 [2018-08-28]. (原始内容存档于2018-06-16). [공식입장] 워너원, 6월 4일 스페셜 앨범 '1÷χ=1' 들고 컴백 확정. Xports News