Ek, J. A. v. (1975). The threshold level in a European unit/credit system for modern language learning by adults. Council for Cultural Co-operation of the Council of Europe.
Chicago Style (17th ed.) CitationEk, J. A. van. The Threshold Level in a European Unit/credit System for Modern Language Learning by Adults. Strasbourg: Council for Cultural Co-operation of the Council of Europe, 1975.
MLA (8th ed.) CitationEk, J. A. van. The Threshold Level in a European Unit/credit System for Modern Language Learning by Adults. Council for Cultural Co-operation of the Council of Europe, 1975.
Warning: These citations may not always be 100% accurate.