Townsend, L. (1998). A contagious evil: The mind of a serial killer / by Larry Townsend (1. Auflage.). LT.
Lua i Stíl Chicago (17ú heag.)Townsend, Larry. A Contagious Evil: The Mind of a Serial Killer / by Larry Townsend. 1. Auflage. Beverly Hills, Calif.: LT, 1998.
Lua MLA (8ú heag.)Townsend, Larry. A Contagious Evil: The Mind of a Serial Killer / by Larry Townsend. 1. Auflage. LT, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.