(2008). Face2face: Upper intermediate work book. New York, US: Cambridge University Press.
Chicago Style aipamenaFace2face: Upper Intermediate Work Book. New York, US: Cambridge University Press, 2008.
MLA aipamenaFace2face: Upper Intermediate Work Book. New York, US: Cambridge University Press, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.