Petikan APA

United States. Civil Aeronautics Board. Foreign Air Transport Division., & United States. Civil Aeronautics Bd. Dir. of Scheduled Common Carrier Airlines of the World. World directory of scheduled common carrier airlines. [Washington, D.C.]: Foreign Air Transport Division, Economic Bureau, Civil Aeronautics Board.

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United States. Civil Aeronautics Board. Foreign Air Transport Division., and United States. Civil Aeronautics Bd. Dir. of Scheduled Common Carrier Airlines of the World. World Directory of Scheduled Common Carrier Airlines. [Washington, D.C.]: Foreign Air Transport Division, Economic Bureau, Civil Aeronautics Board.

Petikan MLA

United States. Civil Aeronautics Board. Foreign Air Transport Division., and United States. Civil Aeronautics Bd. Dir. of Scheduled Common Carrier Airlines of the World. World Directory of Scheduled Common Carrier Airlines. [Washington, D.C.]: Foreign Air Transport Division, Economic Bureau, Civil Aeronautics Board.