Cita APA (7a ed.)
Ehui, S. K., Kang, B., & Spencer, D. (1990). Economic analysis of soil erosion effects in alley cropping. No-till and bush fallow systems in south west Nigeria. Elsevier.
Cita Chicago Style (17a ed.)
Ehui, Simeon K., B.T Kang, y D.S.C Spencer. Economic Analysis of Soil Erosion Effects in Alley Cropping. No-till and Bush Fallow Systems in South West Nigeria. Elsevier, 1990.
Cita MLA (9a ed.)
Ehui, Simeon K., et al. Economic Analysis of Soil Erosion Effects in Alley Cropping. No-till and Bush Fallow Systems in South West Nigeria. Elsevier, 1990.
Precaución: Estas citas no son 100% exactas.