International Air Transport Association. (1997). Passenger agency conference resolutions manual (19th ed.). IATA.
Chicago-viite (17. p.)International Air Transport Association. Passenger Agency Conference Resolutions Manual. 19th ed. Montreal: IATA, 1997.
MLA-viite (9. p.)International Air Transport Association. Passenger Agency Conference Resolutions Manual. 19th ed. IATA, 1997.
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