Cita APA (7a ed.)
Grings, E. E., Tarawali, S. A., Blümmel, M., Musa, A., Fatokun, C., Hearne, S., & Boukar, O. (2012). Cowpea in evolving livestock systems. International Institute of Tropical Agriculture.
Cita Chicago Style (17a ed.)
Grings, Elaine E., Shirley A. Tarawali, Michael Blümmel, A. Musa, C.A Fatokun, S. Hearne, y O. Boukar. Cowpea in Evolving Livestock Systems. International Institute of Tropical Agriculture, 2012.
Cita MLA (9a ed.)
Grings, Elaine E., et al. Cowpea in Evolving Livestock Systems. International Institute of Tropical Agriculture, 2012.
Precaución: Estas citas no son 100% exactas.