APA (7th ed.) Citation
Wien, H. (1975). Yield physiology of cowpea (Vigna unguiculata, L. Walp): A review of work at IITA.
Chicago Style (17th ed.) Citation
Wien, H.C. Yield Physiology of Cowpea (Vigna Unguiculata, L. Walp): A Review of Work at IITA. 1975.
MLA (9th ed.) Citation
Wien, H.C. Yield Physiology of Cowpea (Vigna Unguiculata, L. Walp): A Review of Work at IITA. 1975.
Warning: These citations may not always be 100% accurate.