Richards, J C., & Schmidt, R W. (2013). Language and communication(First published 1983 by Addison Wesley Longman Limited, seventh impression 1996, published 2013 by Routledge.). London: Routledge, Taylor & Francis Group.

Language and communication / edited by Jack C. Richards and Richard W. Schmidt . — First published 1983 by Addison Wesley Longman Limited, seventh impression 1996, published 2013 by Routledge.. — London : Routledge, Taylor & Francis Group, 2013. — 1 Online-Ressource (xii, 276 Seiten). — (Applied linguistics and language study). — ISBN 9781315836027

Richards, Jack C., and Richard W. Schmidt. Language and Communication.First published 1983 by Addison Wesley Longman Limited, seventh impression 1996, published 2013 by Routledge.London: Routledge, Taylor & Francis Group, 2013.