Richards, J. C. (1998). New interchange: Video teacher's guide. Cambridge: Cambridge University Press.
Dyfyniad Arddull ChicagoRichards, Jack C. New Interchange: Video Teacher's Guide. Cambridge: Cambridge University Press, 1998.
Dyfyniad MLARichards, Jack C. New Interchange: Video Teacher's Guide. Cambridge: Cambridge University Press, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.