Doff, A. J. (2001). Language in use: Beginner's Classroom book. Cambridge University Press.
Dyfyniad Arddull ChicagoDoff, Adrian; Jones. Language in Use: Beginner's Classroom Book. Cambridge: Cambridge University Press, 2001.
Dyfyniad MLADoff, Adrian; Jones. Language in Use: Beginner's Classroom Book. Cambridge University Press, 2001.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.