APA (7th ed.) Citation

Balmer, E. (2006). A field guide to the birds of the British Isles.

Chicago Style (17th ed.) Citation

Balmer, Elizabeth. A Field Guide to the Birds of the British Isles. Paraggon Books, 2006.

MLA (9th ed.) Citation

Balmer, Elizabeth. A Field Guide to the Birds of the British Isles. 2006.