APA Alıntı

Howell, D. W. (1993). Passport: An Introduction to the travel and tourism industry (2nd ed.). Cincinnati: South-Western.

Chicago Stili Alıntı

Howell, David W. Passport: An Introduction to the Travel and Tourism Industry. 2nd ed. Cincinnati: South-Western, 1993.

MLA Alıntı

Howell, David W. Passport: An Introduction to the Travel and Tourism Industry. 2nd ed. Cincinnati: South-Western, 1993.