Cita APA (7a ed.)
Kaufmann, R. R. v. (1979). Livestock production systems in the sub-humid zone of Nigeria, and ILCA's sub-humid research programme. International Livestock Centre for Africa.
Cita Chicago Style (17a ed.)
Kaufmann, Ralph R. von. Livestock Production Systems in the Sub-humid Zone of Nigeria, and ILCA's Sub-humid Research Programme. International Livestock Centre for Africa, 1979.
Cita MLA (9a ed.)
Kaufmann, Ralph R. von. Livestock Production Systems in the Sub-humid Zone of Nigeria, and ILCA's Sub-humid Research Programme. International Livestock Centre for Africa, 1979.
Precaución: Estas citas no son 100% exactas.