APA (7th ed.) Zitazioa

Strieber,Whitley. (1992). Unholy fire. Penguin books U.S.A Inc..

Chicago Style (17th ed.) Zitazioa

Strieber,Whitley. Unholy Fire. New York: Penguin books U.S.A Inc., 1992.

MLA (9th ed.) Zitazioa

Strieber,Whitley. Unholy Fire. Penguin books U.S.A Inc., 1992.