Oxenden, C. (1999). English file: Teacher's book. Oxford: Oxford University Press.
Chicago Style aipamenaOxenden, Clive. English File: Teacher's Book. Oxford: Oxford University Press, 1999.
MLA aipamenaOxenden, Clive. English File: Teacher's Book. Oxford: Oxford University Press, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.