Cita APA (7a ed.)
Keller-Grein, G., Amézquita, M. C., Lema, G., & Franco, L. (1992). Multilocational testing of grasses and legumes in the humid tropics of South America. International Center for Tropical Agriculture.
Cita Chicago Style (17a ed.)
Keller-Grein, Gerhard, María Cristina Amézquita, G. Lema, y LH Franco. Multilocational Testing of Grasses and Legumes in the Humid Tropics of South America. International Center for Tropical Agriculture, 1992.
Cita MLA (9a ed.)
Keller-Grein, Gerhard, et al. Multilocational Testing of Grasses and Legumes in the Humid Tropics of South America. International Center for Tropical Agriculture, 1992.
Precaución: Estas citas no son 100% exactas.