Cita APA (7a ed.)
Williams, T. O., Thornton, P. K., & Fernández Rivera, S. (2002). Trends and prospects for livestock systems in the semi-arid tropics of sub-Saharan Africa. International Crops Research Institute for the Semi-Arid Tropics.
Cita Chicago Style (17a ed.)
Williams, Timothy O., Philip K. Thornton, y S. Fernández Rivera. Trends and Prospects for Livestock Systems in the Semi-arid Tropics of Sub-Saharan Africa. International Crops Research Institute for the Semi-Arid Tropics, 2002.
Cita MLA (9a ed.)
Williams, Timothy O., et al. Trends and Prospects for Livestock Systems in the Semi-arid Tropics of Sub-Saharan Africa. International Crops Research Institute for the Semi-Arid Tropics, 2002.
Precaución: Estas citas no son 100% exactas.