Cita APA (7a ed.)
Astatke, A., Jutzi, S., & Grunder, M. (1989). Vertisol surface drainage and effects on soil and nutrient conservation, excess water disposal and wheat growth at Debre Zeit. Institute of Agricultural Research.
Cita Chicago Style (17a ed.)
Astatke, A., S.C Jutzi, y M. Grunder. Vertisol Surface Drainage and Effects on Soil and Nutrient Conservation, Excess Water Disposal and Wheat Growth at Debre Zeit. Institute of Agricultural Research, 1989.
Cita MLA (9a ed.)
Astatke, A., et al. Vertisol Surface Drainage and Effects on Soil and Nutrient Conservation, Excess Water Disposal and Wheat Growth at Debre Zeit. Institute of Agricultural Research, 1989.
Precaución: Estas citas no son 100% exactas.