AACR2

AACR2, or the Anglo-American Cataloguing Rules, Second Edition, is a standard set of guidelines used by library professionals to create consistent and accurate bibliographic records for books, journals, and other materials. It helps librarians organize and describe items so that users can find and identify resources efficiently. By following these rules, libraries ensure that information like titles, authors, publication details, and subjects are entered uniformly, making catalog searches reliable and user-friendly across institutions. AACR2 has been widely adopted internationally, though it is gradually being replaced by newer standards like RDA.