Cita APA (7a ed.)
Asten, P. J. v. (2010). Improving soil fertility through intercropping: Cocoa lessons from coffee systems. International Institute of Tropical Agriculture.
Cita Chicago Style (17a ed.)
Asten, Piet J.A. van. Improving Soil Fertility Through Intercropping: Cocoa Lessons from Coffee Systems. International Institute of Tropical Agriculture, 2010.
Cita MLA (9a ed.)
Asten, Piet J.A. van. Improving Soil Fertility Through Intercropping: Cocoa Lessons from Coffee Systems. International Institute of Tropical Agriculture, 2010.
Precaución: Estas citas no son 100% exactas.