APA aipamena

Norris, R., & Edwards, L. (2013). Ready for first: Workbook with key. London: Macmillan.

Chicago Style aipamena

Norris, Roy, và Lynda Edwards. Ready for First: Workbook With Key. London: Macmillan, 2013.

MLA aipamena

Norris, Roy, và Lynda Edwards. Ready for First: Workbook With Key. London: Macmillan, 2013.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.