APA (7th ed.) Zitazioa
O'Connor, W. E. (2001). An introduction to airline economics (6th ed.). Praeger.
Chicago Style (17th ed.) Zitazioa
O'Connor, William E. An Introduction to Airline Economics. 6th ed. Westport, Conn.: Praeger, 2001.
MLA (9th ed.) Zitazioa
O'Connor, William E. An Introduction to Airline Economics. 6th ed. Praeger, 2001.
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