Soyinka, W. The Fourth Stage: Through the Mysteries of Ogun to the Origin of Yoruba Tragedy / Wole Soyinka. African philosophy : an anthology.(1998).
Lua i Stíl Chicago (17ú heag.)Soyinka, Wole. "The Fourth Stage: Through the Mysteries of Ogun to the Origin of Yoruba Tragedy / Wole Soyinka." African Philosophy : An Anthology.(1998) .
Lua MLA (8ú heag.)Soyinka, Wole. "The Fourth Stage: Through the Mysteries of Ogun to the Origin of Yoruba Tragedy / Wole Soyinka." African Philosophy : An Anthology.(1998), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.