APA (7th ed.) Zitazioa

Keeffe, B. (1984). The long Good Friday: A screenplay. Methuen Film.

Chicago Style (17th ed.) Zitazioa

Keeffe, Barrie. The Long Good Friday: A Screenplay. London: Methuen Film, 1984.

MLA (9th ed.) Zitazioa

Keeffe, Barrie. The Long Good Friday: A Screenplay. Methuen Film, 1984.