Gaya APA

Buhalis, D., Costa, C. (2006). EBOOK : TOURISM BUSINESS FRONTIERS - Consumers, products and industry . Oxford: Elsevier Butterworth-Heinemann.

Gaya MLA

Buhalis, Dimitrios., Costa, Carlos. "EBOOK : TOURISM BUSINESS FRONTIERS - Consumers, products and industry". Oxford: Elsevier Butterworth-Heinemann, 2006. Text.