Cita APA (7a ed.)
Friesen, D. K., Ayarza, M. A., Thomas, R. J., Amézquita Collazos, E., & Sanz Scovino, J. I. (1999). Strategic systems research for the Latin American savannas. International Center for Tropical Agriculture.
Cita Chicago Style (17a ed.)
Friesen, Dennis K., Miguel Angel Ayarza, Richard J. Thomas, Edgar Amézquita Collazos, y José Ignacio Sanz Scovino. Strategic Systems Research for the Latin American Savannas. International Center for Tropical Agriculture, 1999.
Cita MLA (9a ed.)
Friesen, Dennis K., et al. Strategic Systems Research for the Latin American Savannas. International Center for Tropical Agriculture, 1999.
Precaución: Estas citas no son 100% exactas.