APA (7th ed.) Citation

United States. Department of the Interior. (1920). Opportunities for study of medicine in U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Department of the Interior. Opportunities for Study of Medicine in U.S. [Washington]: GPO, 1920.

MLA (9th ed.) Citation

United States. Department of the Interior. Opportunities for Study of Medicine in U.S. GPO, 1920.

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