APA (7th ed.) Citation

(2010). Wildlife photographer of the year portfolio 20. A Lark Photography Book.

Chicago Style (17th ed.) Citation

Wildlife Photographer of the Year Portfolio 20. New York: A Lark Photography Book, 2010.

MLA (9th ed.) Citation

Wildlife Photographer of the Year Portfolio 20. A Lark Photography Book, 2010.

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