APA aipamena

(1993). Headway teacher's book: Elementary. New York: Oxford University Press.

Chicago Style aipamena

Headway Teacher's Book: Elementary. New York: Oxford University Press, 1993.

MLA aipamena

Headway Teacher's Book: Elementary. New York: Oxford University Press, 1993.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.