APA (7th ed.) Citation

Barnard, C. J., & Thompson, D. B. A. (1985). Gulls and plovers: The ecology and behaviour of mixed-species feeding groups. Columbia University Press.

Chicago Style (17th ed.) Citation

Barnard, C. J., and D. B. A. Thompson. Gulls and Plovers: The Ecology and Behaviour of Mixed-species Feeding Groups. New York: Columbia University Press, 1985.

MLA (9th ed.) Citation

Barnard, C. J., and D. B. A. Thompson. Gulls and Plovers: The Ecology and Behaviour of Mixed-species Feeding Groups. Columbia University Press, 1985.