Official Airline Guides, inc, & American Hotel & Motel Association. (1990). OAG business travel planner: The official guide to lodging and travel related services (North American ed.). Official Airline Guides.
Chicago Style (17th ed.) CitationOfficial Airline Guides, inc, and American Hotel & Motel Association. OAG Business Travel Planner: The Official Guide to Lodging and Travel Related Services. North American ed. Oak Brook, IL: Official Airline Guides, 1990.
MLA (8th ed.) CitationOfficial Airline Guides, inc, and American Hotel & Motel Association. OAG Business Travel Planner: The Official Guide to Lodging and Travel Related Services. North American ed. Official Airline Guides, 1990.
Warning: These citations may not always be 100% accurate.