"オリコンランキング情報サービス「you大樹」" [Oricon Ranking Information Service "You Big Tree"]. Oricon. Retrieved October 19, 2012. (subscription only)
riaj.or.jp
レコード協会調べ 9月度有料音楽配信認定 [Record Association Report: September Paid Music Download Certifications]. RIAJ (in Japanese). October 19, 2012. Retrieved October 19, 2012.