Thomas, D. G. M., Davies, W. I. J., & Herbert, T. G. G. (1971). Animal husbandry (2nd (revised) ed.). Cassell.
Lua i Stíl Chicago (17ú heag.)Thomas, D. G. M., William Idris James Davies, agus T. G. G. Herbert. Animal Husbandry. 2nd (revised) ed. London: Cassell, 1971.
Lua MLA (9ú heag.)Thomas, D. G. M., et al. Animal Husbandry. 2nd (revised) ed. Cassell, 1971.
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