Gaya APA

Semer-Purzycki, J., Florio, R, M. (1996). International Travel, Fares, and Ticketing . USA: Prentice Hall.

Gaya MLA

Semer-Purzycki, Jeanne., Florio, Rose, Mary. "International Travel, Fares, and Ticketing". USA: Prentice Hall, 1996. Text.