Ogbu, K. (1978). Christianity in West Africa: The Nigerian story. Daystar Press.
Lua i Stíl Chicago (17ú heag.)Ogbu, Kalu. Christianity in West Africa: The Nigerian Story. Ibadan, Nigeria: Daystar Press, 1978.
Lua MLA (9ú heag.)Ogbu, Kalu. Christianity in West Africa: The Nigerian Story. Daystar Press, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.