http://www.crunchyroll.com/anime-news/2015/06/16/video-second-attack-on-titan-anime-compilation-movie-theme-song-previewed|t = VIDEO: Second "Attack on Titan" Anime Compilation Movie Theme Song Previewed
http://www.crunchyroll.com/anime-news/2015/06/25-1/video-attack-on-titan-2nd-compilation-film-latest-trailer-introduces-theme-song-by-linked-horizon|t = VIDEO: "Attack on Titan" 2nd Compilation Film Latest Trailer Introduces Theme Song by Linked Horizon