Lua APA (7ú heag.)
Maiken, P. T., & Sullivan, T. (1983). Killer clown: The John Wayne Gacy murders. Pinnacle Books.
Lua i Stíl Chicago (17ú heag.)
Maiken, Peter T., agus Terry Sullivan. Killer Clown: The John Wayne Gacy Murders. New York: Pinnacle Books, 1983.
Lua MLA (9ú heag.)
Maiken, Peter T., agus Terry Sullivan. Killer Clown: The John Wayne Gacy Murders. Pinnacle Books, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.