Keeffe, B. (1984). The long Good Friday: A screenplay. Methuen Film.
Lua i Stíl Chicago (17ú heag.)Keeffe, Barrie. The Long Good Friday: A Screenplay. London: Methuen Film, 1984.
Lua MLA (9ú heag.)Keeffe, Barrie. The Long Good Friday: A Screenplay. Methuen Film, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.