Cita APA

Harwood, R. R. (1979). Small farm development. Understanding and improving farming systems in the humid tropics. USA: International Agricultural Development Service.

Citación estilo Chicago

Harwood, Richard R. Small Farm Development. Understanding and Improving Farming Systems in the Humid Tropics. USA: International Agricultural Development Service, 1979.

Cita MLA

Harwood, Richard R. Small Farm Development. Understanding and Improving Farming Systems in the Humid Tropics. USA: International Agricultural Development Service, 1979.