APA (7th ed.) Citation

United States. Civil Aeronautics Board. (1953). United States air transportation system: Routes permanently certified, September 30, 1953. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

United States. Civil Aeronautics Board. United States Air Transportation System: Routes Permanently Certified, September 30, 1953. [Washington, D.C.]: U.S. Government Printing Office, 1953.

MLA (8th ed.) Citation

United States. Civil Aeronautics Board. United States Air Transportation System: Routes Permanently Certified, September 30, 1953. U.S. Government Printing Office, 1953.