APA (7th ed.) Citation

United States. Department of the Interior. (1914). Travel regulations. GPO.

Chicago Style (17th ed.) Citation

United States. Department of the Interior. Travel Regulations. [Washington]: GPO, 1914.

MLA (9th ed.) Citation

United States. Department of the Interior. Travel Regulations. GPO, 1914.

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