APA (7th ed.) Zitazioa
Kroll, G. (1998). Friction: Best gay erotic fiction. Alyson Books.
Chicago Style (17th ed.) Zitazioa
Kroll, Gerry. Friction: Best Gay Erotic Fiction. Los Angeles: Alyson Books, 1998.
MLA (9th ed.) Zitazioa
Kroll, Gerry. Friction: Best Gay Erotic Fiction. Alyson Books, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.