APA aipamena

Robin Walker. (2006). Oxford English for careers tourism 1. NY. Oxford.

Chicago Style aipamena

Robin Walker. Oxford English for Careers Tourism 1. NY. Oxford, 2006.

MLA aipamena

Robin Walker. Oxford English for Careers Tourism 1. NY. Oxford, 2006.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.