Cita APA (7a ed.)
Ezumah, H., Nam, N., & Walker, P. (1987). Maize-cowpea intercropping as affected by nitrogen fertilization.
Cita Chicago Style (17a ed.)
Ezumah, H.C, N.K Nam, y P. Walker. Maize-cowpea Intercropping as Affected by Nitrogen Fertilization. 1987.
Cita MLA (9a ed.)
Ezumah, H.C, et al. Maize-cowpea Intercropping as Affected by Nitrogen Fertilization. 1987.
Precaución: Estas citas no son 100% exactas.