Heard, A. (1999). Apocalypse pretty soon: Travels in end-time America. W.W. Norton.
Lua i Stíl Chicago (17ú heag.)Heard, Alex. Apocalypse Pretty Soon: Travels in End-time America. New York: W.W. Norton, 1999.
Lua MLA (8ú heag.)Heard, Alex. Apocalypse Pretty Soon: Travels in End-time America. W.W. Norton, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.