APA (7th ed.) Citation

Williams, J. G., & Arlott, N. (1980). A field guide to the birds of East Africa ([Completely rev. ed.].). Collins.

Chicago Style (17th ed.) Citation

Williams, John George, and Norman Arlott. A Field Guide to the Birds of East Africa. [Completely rev. ed.]. London: Collins, 1980.

MLA (9th ed.) Citation

Williams, John George, and Norman Arlott. A Field Guide to the Birds of East Africa. [Completely rev. ed.]. Collins, 1980.