Hollywood Undead - American Tragedy Album Reviews, Songs & More | AllMusic. [s.l.]: [s.n.] Dostupné online. (anglicky)
billboard.com
Hollywood Undead. Billboard [online]. [cit. 2022-10-27]. Dostupné online. (anglicky)
metacritic.com
American Tragedy by Hollywood Undead. [s.l.]: [s.n.] Dostupné online. (anglicky)
officialcharts.com
Official Albums Chart Top 100 | Official Charts Company. www.officialcharts.com [online]. [cit. 2022-10-27]. Dostupné online. (anglicky)
theminaretonline.com
Hollywood Undead Rises Above the Sophomore Slump | The Minaret. web.archive.org [online]. 2011-08-11 [cit. 2022-10-27]. Dostupné v archivu pořízeném z originálu dne 2011-08-11.
web.archive.org
Hollywood Undead Rises Above the Sophomore Slump | The Minaret. web.archive.org [online]. 2011-08-11 [cit. 2022-10-27]. Dostupné v archivu pořízeném z originálu dne 2011-08-11.
