APA (7th ed.) Citation

Centre for Information on Language Teaching and Research & Sidwell, D. (1987). Teaching languages to adults / edited by Duncan Sidwell (Updated and enl. ed.). Centre for Information on Language Teaching and Research.

Chicago Style (17th ed.) Citation

Centre for Information on Language Teaching and Research and Duncan Sidwell. Teaching Languages to Adults / Edited by Duncan Sidwell. Updated and enl. ed. London: Centre for Information on Language Teaching and Research, 1987.

MLA (9th ed.) Citation

Centre for Information on Language Teaching and Research and Duncan Sidwell. Teaching Languages to Adults / Edited by Duncan Sidwell. Updated and enl. ed. Centre for Information on Language Teaching and Research, 1987.

Warning: These citations may not always be 100% accurate.