Asiwaju (1979). "The Aja-Speaking Peoples of Nigeria: A Note on Their Origins, Settlement and Cultural Adaptation up to 1945". Africa: Journal of the International African Institute. 49 (1): 15. doi:10.2307/1159502. ISSN0001-9720.
Asiwaju (1979). "The Aja-Speaking Peoples of Nigeria: A Note on Their Origins, Settlement and Cultural Adaptation up to 1945". Africa: Journal of the International African Institute. 49 (1): 15. doi:10.2307/1159502. ISSN0001-9720.