APA (7. basım) Alıntı

Singh, T., & Singh, S. (1999). Tourism development in critical environments. Cognizant Communication Corp.

Chicago Style (17. basım) Atıf

Singh, Tejvir, ve Shalini Singh. Tourism Development in Critical Environments. New York: Cognizant Communication Corp, 1999.

MLA (9th ed.) Atıf

Singh, Tejvir, ve Shalini Singh. Tourism Development in Critical Environments. Cognizant Communication Corp, 1999.