Programmed Airline Reservations System (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Programmed Airline Reservations System" in English language version.

Last modified: 14:37:23, 6 September 2025 (UTC)

Ref.Un. Ref.Website

Global rank English rank

53books.google.com

3^rd place

3^rd place

7^th place

7^th place

books.google.com (Global: 3^rd place; English: 3^rd place)

Vinod, Ben (2024). Mastering the Travel Intermediaries: Origins and Future of Global Distribution Systems, Travel Management Companies, and Online Travel Agencies. Cham: Springer Nature Switzerland. p. 22. ISBN 9783031515248.
Vinod, Ben (2024). Mastering the Travel Intermediaries: Origins and Future of Global Distribution Systems, Travel Management Companies, and Online Travel Agencies. Cham: Springer Nature Switzerland. p. 23. ISBN 9783031515248.
Vinod, Ben (2024). Mastering the Travel Intermediaries: Origins and Future of Global Distribution Systems, Travel Management Companies, and Online Travel Agencies. Cham: Springer Nature Switzerland. p. 26. ISBN 9783031515248.

nytimes.com (Global: 7^th place; English: 7^th place)

Weiner, Eric, "Diagrams of the Pan Am's and NWA's 1988 route system", The New York Times, Sunday, June 11, 1989