APA aipamena

(2003). American headway; Student book - 1. Oxford: Oxford University Press.

Chicago Style aipamena

American Headway; Student Book - 1. Oxford: Oxford University Press, 2003.

MLA aipamena

American Headway; Student Book - 1. Oxford: Oxford University Press, 2003.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.