Cox, G. (2003). Underworld. Pocket Star Books.
Lua i Stíl Chicago (17ú heag.)Cox, Greg. Underworld. New York: Pocket Star Books, 2003.
Lua MLA (8ú heag.)Cox, Greg. Underworld. Pocket Star Books, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.