Richards, J. C., & Schmidt, R. W. (1983). Language and communication. Longman.
Dyfyniad Arddull ChicagoRichards, Jack C., and Richard W. Schmidt. Language and Communication. Londres: Longman, 1983.
Dyfyniad MLARichards, Jack C., and Richard W. Schmidt. Language and Communication. Longman, 1983.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.