(2008). Face2face: Pre-intermediate student's book. New York, US: Cambridge University Press.
Παραπομπή Chicago StyleFace2face: Pre-intermediate Student's Book. New York, US: Cambridge University Press, 2008.
Παραπομπή MLAFace2face: Pre-intermediate Student's Book. New York, US: Cambridge University Press, 2008.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.