Bibliografia

Principal

• (World Animal Science C. 9). Ed. P. Hunton. Elsevier scientific Publishing Company, Amesterdam: Poultry Production, 1995. null
• The Scieence and Practice of Pig Production. Longman Scientific and Technical, Longman Group Essex CM20 2JE. England.: Whittemore C.T., 1993. null
• Sheep And Goat Production (Word Animal Science. C. 1) Ed. I.E. Coop, Elsevier Scientific Publishing Company, Amsterdam.: Coop, I.E., 1992. null
• Uderstanding the Dairy Cow, second edition. BSP Professional books, Oxford OX2 0EL, 357 pp.: WEBSTER, J. (1993) null

Secundária

• Goat Production Sistems in the Mediterrenean. Ed. A. El Aich, S. Landau, A. Bourbouze, R. Rubino and P. Morand-Fehr. Wageningen.: EAAP Publication N.º 71, 1995. null
• Sheep Production. Ed. Butterworths, Dorough Green, Sevenoaks, Kent TN 158 PH, England: Haresign, H., 1983. null