Cita APA (7a ed.)
Spain, J. M., & Ayarza, M. A. (1992). Tropical pastures target environments. International Center for Tropical Agriculture.
Cita Chicago Style (17a ed.)
Spain, James M., y Miguel Angel Ayarza. Tropical Pastures Target Environments. International Center for Tropical Agriculture, 1992.
Cita MLA (9a ed.)
Spain, James M., y Miguel Angel Ayarza. Tropical Pastures Target Environments. International Center for Tropical Agriculture, 1992.
Precaución: Estas citas no son 100% exactas.