Cita APA (7th ed.)
O'Connor, W. E. (2001). An introduction to airline economics (6th ed.). Praeger.
Cita Chicago (17th ed.)
O'Connor, William E. An Introduction to Airline Economics. 6th ed. Westport, Conn.: Praeger, 2001.
Cita MLA (9th ed.)
O'Connor, William E. An Introduction to Airline Economics. 6th ed. Praeger, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.