United States. Department of the Interior. (1931). [Defining trespass on coal land of U.S. and providing penalty therefor; on unlawful removal of coal from public lands]. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Department of the Interior. [Defining Trespass on Coal Land of U.S. and Providing Penalty Therefor; on Unlawful Removal of Coal from Public Lands]. [Washington]: [publisher not identified], 1931.
MLA (9th ed.) CitationUnited States. Department of the Interior. [Defining Trespass on Coal Land of U.S. and Providing Penalty Therefor; on Unlawful Removal of Coal from Public Lands]. [publisher not identified], 1931.
Warning: These citations may not always be 100% accurate.