Παραπομπή APA
Library of Congress. Network Development & MARC Standards Office. (1992). USMARC format for bibliographic data: Including guidelines for content designation. Washington: Cataloging Distribution Service, Library of Congress..
Παραπομπή Chicago StyleLibrary of Congress. Network Development & MARC Standards Office. USMARC Format for Bibliographic Data: Including Guidelines for Content Designation. Washington: Cataloging Distribution Service, Library of Congress., 1992.
Παραπομπή MLALibrary of Congress. Network Development & MARC Standards Office. USMARC Format for Bibliographic Data: Including Guidelines for Content Designation. Washington: Cataloging Distribution Service, Library of Congress., 1992.
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