Παραπομπή APA

Robbins, M. A. (2011). Crops and carbon: Aying farmers to combat climate change.

Παραπομπή Chicago Style

Robbins, Mike; Author. Crops and Carbon: Aying Farmers to Combat Climate Change. New York, Earthscan, 2011.

Παραπομπή MLA

Robbins, Mike; Author. Crops and Carbon: Aying Farmers to Combat Climate Change. 2011.