APA (7th ed.) Citation

Comber, R. (1991). Birds of the world. Colour Library Books.

Chicago Style (17th ed.) Citation

Comber, Richard. Birds of the World. Surrey: Colour Library Books, 1991.

MLA (9th ed.) Citation

Comber, Richard. Birds of the World. Colour Library Books, 1991.

Warning: These citations may not always be 100% accurate.