Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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