APA (7th ed.) Citation

United States. Department of the Interior. (1920). Modifying Alaska timber regulations Circular No. 491 (45 L.D., 227, 250), so as to permit of export of birch timber as authorized by Act of June 5, 1920 (Public No. 243). [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Department of the Interior. Modifying Alaska Timber Regulations Circular No. 491 (45 L.D., 227, 250), so as to Permit of Export of Birch Timber as Authorized by Act of June 5, 1920 (Public No. 243). [Washington]: [publisher not identified], 1920.

MLA (9th ed.) Citation

United States. Department of the Interior. Modifying Alaska Timber Regulations Circular No. 491 (45 L.D., 227, 250), so as to Permit of Export of Birch Timber as Authorized by Act of June 5, 1920 (Public No. 243). [publisher not identified], 1920.