APA (7th ed.) Citation

Williamson, G., & Payne, W. J. A. (1978). An introduction to animal husbandry in the tropics (3rd ed. (Longman).). Longman.

Chicago Style (17th ed.) Citation

Williamson, G., and W. J. A. Payne. An Introduction to Animal Husbandry in the Tropics. 3rd ed. (Longman). London : New York: Longman, 1978.

MLA (9th ed.) Citation

Williamson, G., and W. J. A. Payne. An Introduction to Animal Husbandry in the Tropics. 3rd ed. (Longman). Longman, 1978.