Barker, H. (2008). Howard Barker: Plays four. Oberon Books.
Lua i Stíl Chicago (17ú heag.)Barker, Howard. Howard Barker: Plays Four. London: Oberon Books, 2008.
Lua MLA (9ú heag.)Barker, Howard. Howard Barker: Plays Four. Oberon Books, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.