Council of Europe & Trim, J. L. M. (1980). Systems development in adult language learning: A European unit/credit system for modern language learning by adults ([2nd ed.].). Published for and on behalf of the Council of Europe by Pergamon Press.
Chicago Style (17th ed.) CitationCouncil of Europe and John Leslie Melville Trim. Systems Development in Adult Language Learning: A European Unit/credit System for Modern Language Learning by Adults. [2nd ed.]. Oxford: Published for and on behalf of the Council of Europe by Pergamon Press, 1980.
MLA (9th ed.) CitationCouncil of Europe and John Leslie Melville Trim. Systems Development in Adult Language Learning: A European Unit/credit System for Modern Language Learning by Adults. [2nd ed.]. Published for and on behalf of the Council of Europe by Pergamon Press, 1980.