Cita APA (7a ed.)

Semer-Purzycki, J. (1997). International travel, fares, and ticketing. Preentice Hall.

Cita Chicago Style (17a ed.)

Semer-Purzycki, Jeanne. International Travel, Fares, and Ticketing. Upper Saddle Rive, N.J: Preentice Hall, 1997.

Cita MLA (9a ed.)

Semer-Purzycki, Jeanne. International Travel, Fares, and Ticketing. Preentice Hall, 1997.