Gaya APA

Hall, C, M., Gossling, S. (2006). Tourism and Global Environmental Change: ecological, social, economic and political interrelationships . New York: Routledge.

Gaya MLA

Hall, C., Michael., Gossling, Stefan. "Tourism and Global Environmental Change: ecological, social, economic and political interrelationships". New York: Routledge, 2006. BUKU.