Cita APA (7a ed.)

Sheldon, P. J. (1997). Tourism information technology. CAB International.

Cita Chicago Style (17a ed.)

Sheldon, Pauline J. Tourism Information Technology. Wallingford [etc.]: CAB International, 1997.

Cita MLA (9a ed.)

Sheldon, Pauline J. Tourism Information Technology. CAB International, 1997.