(en) Harry George Judge et Robert Blake, World history, Volume 1 (Volumes 3-4 of Oxford illustrated encyclopedia), Oxford University Press (University of Michigan), , 266 p. (ISBN9780198691358, lire en ligne).
(en) Toyin Falola et Ann Genova, The Yoruba in Transition: History, Values, and Modernity, Carolina Academic Press (University of Michigan), , 427 p. (ISBN9781594601347, lire en ligne).
(en) Jean Comaroff et John L. Comaroff, Modernity and Its Malcontents: Ritual and Power in Postcolonial Africa, University of Chicago Press, , 63 p. (ISBN978-0-226-1143-92, lire en ligne).
(en) Oyeronke Olajubu, Women in the Yoruba Religious Sphere (McGill Studies in the History of Religions), SUNY Press, (ISBN9780791458860, lire en ligne).
(en) Kulwant Rai Gupta, Studies in World Affairs, Volume 1, Atlantic Publishers & Dist, , 101 p. (ISBN9788126904952, lire en ligne).
(en) Robert Smith, « The Alafin in Exile: A Study of the Igboho Period in Oyo History », The Journal of African History, vol. 6, no 1, , p. 57–77 (ISSN0021-8537, DOI10.1017/s0021853700005338).
(en) Robert Smith, « The Alafin in Exile: A Study of the Igboho Period in Oyo History », The Journal of African History, vol. 6, no 1, , p. 57–77 (ISSN0021-8537, DOI10.1017/s0021853700005338).