Cita APA (7a ed.)
Williams, T. O., Powell, J., & Fernández Rivera, S. (1995). Manure availability in relation to sustainable food crop production in semi-arid West Africa: Evidence from Niger.
Cita Chicago Style (17a ed.)
Williams, Timothy O., J.M Powell, y S. Fernández Rivera. Manure Availability in Relation to Sustainable Food Crop Production in Semi-arid West Africa: Evidence from Niger. 1995.
Cita MLA (9a ed.)
Williams, Timothy O., et al. Manure Availability in Relation to Sustainable Food Crop Production in Semi-arid West Africa: Evidence from Niger. 1995.
Precaución: Estas citas no son 100% exactas.