APA-referens (7:e uppl.)

Singh, S. (1999). studies in tourism: Key issues for effective management. A P H.

Chicago-referens (17:e uppl.)

Singh, Sagar. Studies in Tourism: Key Issues for Effective Management. New Delhi: A P H, 1999.

MLA-referens (9:e uppl.)

Singh, Sagar. Studies in Tourism: Key Issues for Effective Management. A P H, 1999.