Cita APA (7a ed.)
Allen, D. J. (1992). Survival and spread. International Center for Tropical Agriculture.
Cita Chicago Style (17a ed.)
Allen, David J. Survival and Spread. International Center for Tropical Agriculture, 1992.
Cita MLA (9a ed.)
Allen, David J. Survival and Spread. International Center for Tropical Agriculture, 1992.
Precaución: Estas citas no son 100% exactas.