APA (7th ed.) Citation

United States. Civil Aeronautics Board. Office of Facilities and Operations. (1975). Routes to United States authorized to foreign air carriers of countries under permit, August 31, 1975. The Board.

Chicago Style (17th ed.) Citation

United States. Civil Aeronautics Board. Office of Facilities and Operations. Routes to United States Authorized to Foreign Air Carriers of Countries Under Permit, August 31, 1975. [Washington?: The Board, 1975.

MLA (8th ed.) Citation

United States. Civil Aeronautics Board. Office of Facilities and Operations. Routes to United States Authorized to Foreign Air Carriers of Countries Under Permit, August 31, 1975. The Board, 1975.