APA-Zitierstil (7. Ausg.)

Marm, I., & Sommerfelt, A. A. (1971). Norwegian: A book of self-instruction in the Norwegian Riksmål. Teach Yourself Books.

Chicago-Zitierstil (17. Ausg.)

Marm, Ingvald, und Alf Axelssøn Sommerfelt. Norwegian: A Book of Self-instruction in the Norwegian Riksmål. London: Teach Yourself Books, 1971.

MLA-Zitierstil (9. Ausg.)

Marm, Ingvald, und Alf Axelssøn Sommerfelt. Norwegian: A Book of Self-instruction in the Norwegian Riksmål. Teach Yourself Books, 1971.