(2007). Face2face: Upper intermediate teacher's book. New York: Cambridge University Press.
Dyfyniad Arddull ChicagoFace2face: Upper Intermediate Teacher's Book. New York: Cambridge University Press, 2007.
Dyfyniad MLAFace2face: Upper Intermediate Teacher's Book. New York: Cambridge University Press, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.