APA-Zitierstil (7. Ausg.)

Cohen, I. D. (1929). Principles and practices of vocational guidance. The Century co.

Chicago-Zitierstil (17. Ausg.)

Cohen, Isidore David. Principles and Practices of Vocational Guidance. New York: The Century co, 1929.

MLA-Zitierstil (9. Ausg.)

Cohen, Isidore David. Principles and Practices of Vocational Guidance. The Century co, 1929.