Winters, L. M. (1942). An introduction to breeding farm animals. J. Wiley and Sons; Chapman and Hall.
Lua i Stíl Chicago (17ú heag.)Winters, Laurence M. An Introduction to Breeding Farm Animals. New York, London: J. Wiley and Sons; Chapman and Hall, 1942.
Lua MLA (8ú heag.)Winters, Laurence M. An Introduction to Breeding Farm Animals. J. Wiley and Sons; Chapman and Hall, 1942.
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