APA Alıntı

Bien, A. (1999). Errors and principles of action of ecotourism projects.

Chicago Stili Alıntı

Bien, Amos. Errors and Principles of Action of Ecotourism Projects. 1999.

MLA Alıntı

Bien, Amos. Errors and Principles of Action of Ecotourism Projects. 1999.