APA (7th ed.) Citation

Boulton, C., Newman, C., Sangster, V., & Forsey, C. (1984). Birds. F. Watts.

Chicago Style (17th ed.) Citation

Boulton, Carolyn, Colin Newman, Val Sangster, and Christopher Forsey. Birds. London ; New York: F. Watts, 1984.

MLA (9th ed.) Citation

Boulton, Carolyn, et al. Birds. F. Watts, 1984.