Oba, A.A (2002). "Islamic Law as Customary Law: The Changing Perspective in Nigeria". The International and Comparative Law Quarterly. 51 (4): 817–850. doi:10.1093/iclq/51.4.817. JSTOR3663189.
Oba, A.A (2002). "Islamic Law as Customary Law: The Changing Perspective in Nigeria". The International and Comparative Law Quarterly. 51 (4): 817–850. doi:10.1093/iclq/51.4.817. JSTOR3663189.