APA (7th ed.) Zitazioa

Barker, H. (2008). Howard Barker: Plays four. Oberon Books.

Chicago Style (17th ed.) Zitazioa

Barker, Howard. Howard Barker: Plays Four. London: Oberon Books, 2008.

MLA (9th ed.) Zitazioa

Barker, Howard. Howard Barker: Plays Four. Oberon Books, 2008.