APA aipamena

Marc Helgesen. (1997). Travel file (Student book). Essex, England: Longman.

Chicago Style aipamena

Marc Helgesen. Travel File (Student Book). Essex, England: Longman, 1997.

MLA aipamena

Marc Helgesen. Travel File (Student Book). Essex, England: Longman, 1997.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.