APA (7th ed.) Citation

Johnsgard, P. A. (1983). The hummingbirds of North America (1. ed.). Smithsonian Institution Pr.

Chicago Style (17th ed.) Citation

Johnsgard, Paul A. The Hummingbirds of North America. 1. ed. Washington, D.C: Smithsonian Institution Pr, 1983.

MLA (9th ed.) Citation

Johnsgard, Paul A. The Hummingbirds of North America. 1. ed. Smithsonian Institution Pr, 1983.