APA (7th ed.) Citation

United States. Bureau of Biological Survey. (1919). Amendments to Migratory Bird Treaty Act regulations. GPO.

Chicago Style (17th ed.) Citation

United States. Bureau of Biological Survey. Amendments to Migratory Bird Treaty Act Regulations. [Washington]: GPO, 1919.

MLA (9th ed.) Citation

United States. Bureau of Biological Survey. Amendments to Migratory Bird Treaty Act Regulations. GPO, 1919.

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