International Air Transport Association. (1990). Passenger reservations manual (7th ed.). International Air Transport Association.
Chicago Style (17th ed.) CitationInternational Air Transport Association. Passenger Reservations Manual. 7th ed. Montreal: International Air Transport Association, 1990.
MLA (9th ed.) CitationInternational Air Transport Association. Passenger Reservations Manual. 7th ed. International Air Transport Association, 1990.
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