APA aipamena

Wilson,Ken. (2007). First choice: Workbook. Oxford: New York.

Chicago Style aipamena

Wilson,Ken. First Choice: Workbook. Oxford: New York, 2007.

MLA aipamena

Wilson,Ken. First Choice: Workbook. Oxford: New York, 2007.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.