Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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