References
- Dalziel J. M. The Useful Plants of West Tropical Africa;. London 1937
- Tremcarm A. J. N. Hausa Superstitions and Customs. London 1913
- Talbot P. A. The People of Southern Nigeria. Oxf. University Press. 1926; Vol. II
- Meek C. K. The Tribes of Northern Nigeria. Oxf. University Press. 1925; Vol. I