Legates, J. E., & Warwick, E. J. (1990). Breeding and improvement of farm animals (8th ed.). McGraw-Hill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLegates, James Edward, और Everett James Warwick. Breeding and Improvement of Farm Animals. 8th ed. New York: McGraw-Hill, 1990.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLegates, James Edward, और Everett James Warwick. Breeding and Improvement of Farm Animals. 8th ed. McGraw-Hill, 1990.
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