Cita APA (7a ed.)
Douglas, J. E., Poey Diago, F. R., Robayo Vanoy, G., Arregocés, O., & Fernández de Soto, J. (1983). Essential elements for successful seed programs. International Center for Tropical Agriculture.
Cita Chicago Style (17a ed.)
Douglas, Johnson E., Federico Raúl Poey Diago, G. Robayo Vanoy, Oscar Arregocés, y J. Fernández de Soto. Essential Elements for Successful Seed Programs. International Center for Tropical Agriculture, 1983.
Cita MLA (9a ed.)
Douglas, Johnson E., et al. Essential Elements for Successful Seed Programs. International Center for Tropical Agriculture, 1983.
Precaución: Estas citas no son 100% exactas.