(原始内容存档于2014-12-16) (英语). 3月21日に'GoodDay'で日本デビュー! IUへの質問大募集! [Japan's debut of 'GoodDay' on March 21st! Questions wanted for IU!]. Tower Records. 2012-03-05
Association. 2015-11-12 [2015-11-12]. (原始内容存档于2015-11-16). IU's PV for Japanese debut single "GoodDay" released (页面存档备份,存于互联网档案馆). All K-pop. (2012-02-29)