Asiwaju, A. I. (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 Institute49 (1): 15. ISSN0001-9720. doi:10.2307/1159502.
Asiwaju, A. I. (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 Institute49 (1): 15. ISSN0001-9720. doi:10.2307/1159502.