Robbins, M. A. (2011). Crops and carbon: Aying farmers to combat climate change.
Citación estilo ChicagoRobbins, Mike; Author. Crops and Carbon: Aying Farmers to Combat Climate Change. New York, Earthscan, 2011.
Cita MLARobbins, Mike; Author. Crops and Carbon: Aying Farmers to Combat Climate Change. 2011.
Precaución: Estas citas no son 100% exactas.