APA aipamena

(1999). Knockout frist certificate: Workbook. Oxford: Oxford University Press.

Chicago Style aipamena

Knockout Frist Certificate: Workbook. Oxford: Oxford University Press, 1999.

MLA aipamena

Knockout Frist Certificate: Workbook. Oxford: Oxford University Press, 1999.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.