AKB横山由依、NMBに涙で別れ (in Japanese). Daily Sports. Retrieved June 6, 2015.
fc2.com
entamedata.web.fc2.com
Center and A-side lineup information provided by "AKB48 歴代シングル選抜メンバー(2010年~2015年)" [(2010-2015) AKB48 successive single member selection]. entamedata.web.fc2.com. Retrieved July 23, 2015.