APA (7e ed.) Bronvermelding

(1956). The Classified catalog, basic principles and practices. American Library Association.

Chicago (17e ed.) Bronvermelding

The Classified Catalog, Basic Principles and Practices. Chicago: American Library Association, 1956.

MLA (9e ed.) Bronvermelding

The Classified Catalog, Basic Principles and Practices. American Library Association, 1956.

Let op: Deze citaties zijn niet altijd 100% accuraat.