Tài liệu tham khảo

WikiPedia: Ef: A Fairy Tale of the Two http://www.onsen.ag/popup/fmemo.html http://www.animenewsnetwork.com/news/2008-01-25/in... http://www.animenewsnetwork.com/news/2011-07-03/se... http://www.animenewsnetwork.com/news/2013-02-24/mi... http://www.animenewsnetwork.com/review/ef/a-tale-o... http://www.comptiq.com/ http://www.comptiq.com/release/comptiq/index.html http://gs.dengeki.com/ranking/index.html http://gs.dengekinet.com/book/festivaldeluxe01/ind... http://www.ef-melo.com/