APA-Zitierstil (7. Ausg.)

Merrill, W. S. (1939). Code for classifiers: Principles governing the consistent placing of books in a system of classification (2.ed.). American Library Association.

Chicago-Zitierstil (17. Ausg.)

Merrill, William S. Code for Classifiers: Principles Governing the Consistent Placing of Books in a System of Classification. 2.ed. Chicago: American Library Association, 1939.

MLA-Zitierstil (9. Ausg.)

Merrill, William S. Code for Classifiers: Principles Governing the Consistent Placing of Books in a System of Classification. 2.ed. American Library Association, 1939.