APA (7th ed.) Citation
Utoh, N., Oyebanji, O., & Ajeigbe, H. A. (2008). A manual on cowpea seed production.
Chicago Style (17th ed.) Citation
Utoh, N.O, O.O Oyebanji, and Hakeem A. Ajeigbe. A Manual on Cowpea Seed Production. 2008.
MLA (9th ed.) Citation
Utoh, N.O, et al. A Manual on Cowpea Seed Production. 2008.
Warning: These citations may not always be 100% accurate.