APA (7th ed.) Citation

Barnard, C. J. (1985). Gulls and plovers: The ecology and behaviour of mixed-species feeding groups. Columbia Univ. Pr.

Chicago Style (17th ed.) Citation

Barnard, Christopher J. Gulls and Plovers: The Ecology and Behaviour of Mixed-species Feeding Groups. New York: Columbia Univ. Pr, 1985.

MLA (9th ed.) Citation

Barnard, Christopher J. Gulls and Plovers: The Ecology and Behaviour of Mixed-species Feeding Groups. Columbia Univ. Pr, 1985.