APA (7th ed.) Citation

Official Airline Guides, inc. Airline map of the United States. American Aviation Publications.

Chicago Style (17th ed.) Citation

Official Airline Guides, inc. Airline Map of the United States. [Chicago, Ill.: American Aviation Publications.

MLA (8th ed.) Citation

Official Airline Guides, inc. Airline Map of the United States. American Aviation Publications.

Warning: These citations may not always be 100% accurate.