APA (7e ed.) Bronvermelding

Official Airline Guides, inc. (1991). OAG desktop flight guide (Worldwide ed.). Official Airline Guides.

Chicago (17e ed.) Bronvermelding

Official Airline Guides, inc. OAG Desktop Flight Guide. Worldwide ed. Oak Brook, Ill.: Official Airline Guides, 1991.

MLA (8e ed.) Bronvermelding

Official Airline Guides, inc. OAG Desktop Flight Guide. Worldwide ed. Official Airline Guides, 1991.

Let op: Deze citaties zijn niet altijd 100% accuraat.