APA aipamena

Norris, R. (2014). Ready for advanced: Workbook with key. London: Macmillan.

Chicago Style aipamena

Norris, Roy. Ready for Advanced: Workbook With Key. London: Macmillan, 2014.

MLA aipamena

Norris, Roy. Ready for Advanced: Workbook With Key. London: Macmillan, 2014.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.