APA-Zitierstil (7. Ausg.)

Ek, J. A. v. (1977). The threshold level for modern language learning in schools (1. publ.). Longman.

Chicago-Zitierstil (17. Ausg.)

Ek, Jan Ate van. The Threshold Level for Modern Language Learning in Schools. 1. publ. London: Longman, 1977.

MLA-Zitierstil (9. Ausg.)

Ek, Jan Ate van. The Threshold Level for Modern Language Learning in Schools. 1. publ. Longman, 1977.