Cita APA

American Library Association, & American Library Association. (1942). A.L.A. rules for filing catalog cards. Chicago, III.

Citación estilo Chicago

American Library Association, y American Library Association. A.L.A. Rules for Filing Catalog Cards. Chicago, III, 1942.

Cita MLA

American Library Association, y American Library Association. A.L.A. Rules for Filing Catalog Cards. Chicago, III, 1942.

Precaución: Estas citas no son 100% exactas.