International Air Transport Association. (1997). Passenger agency conference resolutions manual (19th ed.). IATA.
Cita Chicago (17th ed.)International Air Transport Association. Passenger Agency Conference Resolutions Manual. 19th ed. Montreal: IATA, 1997.
Cita MLA (9th ed.)International Air Transport Association. Passenger Agency Conference Resolutions Manual. 19th ed. IATA, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.