APA-Zitierstil (7. Ausg.)

Ek, J. A. v. (1977). The Treshold Level for modern language learning in scholls. Longman.

Chicago-Zitierstil (17. Ausg.)

Ek, Jan Ate van. The Treshold Level for Modern Language Learning in Scholls. Groningen: Longman, 1977.

MLA-Zitierstil (9. Ausg.)

Ek, Jan Ate van. The Treshold Level for Modern Language Learning in Scholls. Longman, 1977.