Cita APA (7a ed.)
Friesen, D. K. (1994). Nutrient cycling. International Center for Tropical Agriculture.
Cita Chicago Style (17a ed.)
Friesen, Dennis K. Nutrient Cycling. International Center for Tropical Agriculture, 1994.
Cita MLA (9a ed.)
Friesen, Dennis K. Nutrient Cycling. International Center for Tropical Agriculture, 1994.
Precaución: Estas citas no son 100% exactas.