Gaya APA

Dubicka, I., O\'Keeffe, M. (2003). English for International Tourism (Ed. 1). Spanyol: Pearson Educational Inc.

Gaya MLA

Dubicka, Iwonna., O\'Keeffe, Margaret. "English for International Tourism". Ed. 1 Spanyol: Pearson Educational Inc, 2003. Text.