International Air Transport Association. (2000). BSP Manual for agents effective 1 December 2000. The Association.
Dyfyniad Arddull ChicagoInternational Air Transport Association. BSP Manual for Agents Effective 1 December 2000. Montreal: The Association, 2000.
Dyfyniad MLAInternational Air Transport Association. BSP Manual for Agents Effective 1 December 2000. The Association, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.