Option (aircraft purchasing) (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Option (aircraft purchasing)" in English language version.

refsWebsite

Global rank English rank

2books.google.com

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books.google.com

Luftman, Jerry N. (2003). Competing in the Information Age: Align in the Sand. United States: Oxford University Press. p. 321. ISBN 0-19-515953-5. Retrieved 2007-12-18.
Holloway, Stephen (2003). Straight and Level: Practical Airline Economics. Ashgate Publishing, Ltd. p. 472. ISBN 0-7546-1930-3. Retrieved 2007-12-18.

nytimes.com

query.nytimes.com

Bryant, Adam (1997-03-21). "Delta to Buy Only Boeing Jets for 20 Years". The New York Times. Retrieved 2007-12-18.