APA-Zitierstil (7. Ausg.)

Ek, J. A. v. (1979). The threshold level for modern language learning in schools (2. impr.). Longman.

Chicago-Zitierstil (17. Ausg.)

Ek, Jan Ate van. The Threshold Level for Modern Language Learning in Schools. 2. impr. London: Longman, 1979.

MLA-Zitierstil (9. Ausg.)

Ek, Jan Ate van. The Threshold Level for Modern Language Learning in Schools. 2. impr. Longman, 1979.