APA (7th ed.) Citation

Smithsonian Institution. (1921). Life histories of North American gulls and terns: Order Longipennes. GPO.

Chicago Style (17th ed.) Citation

Smithsonian Institution. Life Histories of North American Gulls and Terns: Order Longipennes. [Washington]: GPO, 1921.

MLA (9th ed.) Citation

Smithsonian Institution. Life Histories of North American Gulls and Terns: Order Longipennes. GPO, 1921.

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