「東方神起」など韓国の12チームが震災支援ライブ [TVXQ and other Korean artists make 12 teams for earthquake live] (in Japanese). The Asahi Shimbun. June 8, 2011. Retrieved November 25, 2013.
hmv.co.jp
"I□U 【DVD付】". HMV Japan (in Japanese). Retrieved November 25, 2013.
oricon.co.jp
oricon.co.jp
"韓国の"国民の妹"IU、来春日本デビュー決定" [The "Nation's Little Sister" of South Korea, IU, to debut in Japan next spring] (in Japanese). Oricon. November 16, 2011. Retrieved November 25, 2013.
"韓国"国民の妹"IU、3月21日に日本デビュー決定" [The "Nation's Little Sister" of South Korea, IU, to debut in Japan on March 21] (in Japanese). Oricon. January 25, 2012. Retrieved November 25, 2013.
IUのリリース一覧 [A look at IU's releases] (in Japanese). Oricon. Retrieved November 16, 2013.
ranking.oricon.co.jp
"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 November 16, 2013. (subscription only)
ranran-entame.com
"東方神起、2PMら豪華K-POPアーティスト16組が『東京伝説2011』に出演☆2部♪" [16 amazing K-Pop artists like TVXQ and 2PM perform at Tokyo Densetsu 2011 (part 2)]. Ran Ran Entertainment. May 22, 2011. Retrieved November 25, 2013.