APA (7th ed.) Citation

United States. Department of the Interior. (1920). Amendment of oil and gas regulations. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Department of the Interior. Amendment of Oil and Gas Regulations. [Washington]: [publisher not identified], 1920.

MLA (9th ed.) Citation

United States. Department of the Interior. Amendment of Oil and Gas Regulations. [publisher not identified], 1920.

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