Cita APA (7a ed.)
Haque, I., Mamo, T., & Astatke, A. (1992). Nutrients and soil surface management on highland vertisols of Ethiopia. International Livestock Centre for Africa.
Cita Chicago Style (17a ed.)
Haque, I., T. Mamo, y A. Astatke. Nutrients and Soil Surface Management on Highland Vertisols of Ethiopia. International Livestock Centre for Africa, 1992.
Cita MLA (9a ed.)
Haque, I., et al. Nutrients and Soil Surface Management on Highland Vertisols of Ethiopia. International Livestock Centre for Africa, 1992.
Precaución: Estas citas no son 100% exactas.