Cita APA (7a ed.)
Asamenew, G., Beyene, H., Negatu, W., & Ayele, G. (1993). A survey of the farming systems of Vertisol areas of the Ethiopian highlands. International Livestock Centre for Africa.
Cita Chicago Style (17a ed.)
Asamenew, G., H. Beyene, W. Negatu, y G. Ayele. A Survey of the Farming Systems of Vertisol Areas of the Ethiopian Highlands. International Livestock Centre for Africa, 1993.
Cita MLA (9a ed.)
Asamenew, G., et al. A Survey of the Farming Systems of Vertisol Areas of the Ethiopian Highlands. International Livestock Centre for Africa, 1993.
Precaución: Estas citas no son 100% exactas.