Cita APA (7a ed.)
Akpalu, W., Hassan, R., & Ringler, C. (2008). Climate variability and maize yield in South Africa. International Food Policy Research Institute.
Cita Chicago Style (17a ed.)
Akpalu, W., R.M Hassan, y Claudia Ringler. Climate Variability and Maize Yield in South Africa. International Food Policy Research Institute, 2008.
Cita MLA (9a ed.)
Akpalu, W., et al. Climate Variability and Maize Yield in South Africa. International Food Policy Research Institute, 2008.
Precaución: Estas citas no son 100% exactas.