APA (7th ed.) Citation

Ratcliffe, D. A. (1990). Bird life of mountain and upland. Cambridge University Press.

Chicago Style (17th ed.) Citation

Ratcliffe, Derek A. Bird Life of Mountain and Upland. Cambridge [England] ; New York: Cambridge University Press, 1990.

MLA (9th ed.) Citation

Ratcliffe, Derek A. Bird Life of Mountain and Upland. Cambridge University Press, 1990.