Anglo-American Cataloging Rules, 2nd edition, Revised (AACR2)

The Anglo-American Cataloging Rules, 2nd edition (AACR2) is a content standard published by the American Library Association (ALA), Canadian Library Association (CLA), and Chartered Institute of Library and Information Professionals (CILIP). AACR2 includes instructions for describing library materials and for the establishment of access points for the creators of these materials. The descriptive rules in Part I are organized by material type, and within the chapters based on the areas defined by the International Standard Bibliographic Description (ISBD). AACR2 is no longer being maintained, and is scheduled to be replaced by Resource Description and Access (RDA) in early 2013.