United States. Library of Congress, Subject Cataloging Division, & Library of Congress Office for Subject Cataloging Policy. (2003). LC classification outline (Seventh edition.). Library of Congress,Cataloging Distribution Service.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited States. Library of Congress, Subject Cataloging Division, और Library of Congress Office for Subject Cataloging Policy. LC Classification Outline. Seventh edition. Washington, D. C: Library of Congress,Cataloging Distribution Service, 2003.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUnited States. Library of Congress, Subject Cataloging Division, और Library of Congress Office for Subject Cataloging Policy. LC Classification Outline. Seventh edition. Library of Congress,Cataloging Distribution Service, 2003.
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