APA-Zitierstil (7. Ausg.)

Ek, J. A. v. (1972). Analysis of the problems involved in defining, in operational terms, a basic competence level (or threshold level) in foreign language learning by adults. Council of Europe.

Chicago-Zitierstil (17. Ausg.)

Ek, Jan Ate van. Analysis of the Problems Involved in Defining, in Operational Terms, a Basic Competence Level (or Threshold Level) in Foreign Language Learning by Adults. Strasbourg: Council of Europe, 1972.

MLA-Zitierstil (9. Ausg.)

Ek, Jan Ate van. Analysis of the Problems Involved in Defining, in Operational Terms, a Basic Competence Level (or Threshold Level) in Foreign Language Learning by Adults. Council of Europe, 1972.