Estados Unidos Library of Congress Network Development and MARC Standards Office, National Library of Canada. Standards and Support, & National Library of Canada. Standards and Support. (1999). MARC 21 format for authority data: Including guidelines for content designation (1999 edition.). Washington: Library of Congress, Cataloging Distribution Service.
Chicago Style CitationEstados Unidos Library of Congress Network Development and MARC Standards Office, National Library of Canada. Standards and Support, and National Library of Canada. Standards and Support. MARC 21 Format for Authority Data: Including Guidelines for Content Designation. 1999 edition. Washington: Library of Congress, Cataloging Distribution Service, 1999.
MLA CitationEstados Unidos Library of Congress Network Development and MARC Standards Office, National Library of Canada. Standards and Support, and National Library of Canada. Standards and Support. MARC 21 Format for Authority Data: Including Guidelines for Content Designation. 1999 edition. Washington: Library of Congress, Cataloging Distribution Service, 1999.