Cita APA (7th ed.)

O'Connor, W. E. (1978). An introduction to airline economics. Praeger.

Cita Chicago (17th ed.)

O'Connor, William E. An Introduction to Airline Economics. Nueva York: Praeger, 1978.

Cita MLA (9th ed.)

O'Connor, William E. An Introduction to Airline Economics. Praeger, 1978.