Citazione Stile APA (7a Edizione)

Harrison, C., & Greensmith, A. (1993). Birds of the world. Dorling Kindersley.

Citazione stile Chigago Style (17a edizione)

Harrison, Colin, e Alan Greensmith. Birds of the World. London: Dorling Kindersley, 1993.

Citatione MLA (9a ed.)

Harrison, Colin, e Alan Greensmith. Birds of the World. Dorling Kindersley, 1993.