Cita APA (7th ed.)

Gee, C. Y. (1997). The travel industry (3rd ed.). Van Nostrand Reinhold.

Cita Chicago (17th ed.)

Gee, Chuck Y. The Travel Industry. 3rd ed. New York: Van Nostrand Reinhold, 1997.

Cita MLA (9th ed.)

Gee, Chuck Y. The Travel Industry. 3rd ed. Van Nostrand Reinhold, 1997.