Library of Congress, Library of Congress. Subject Cataloging Division, Library of Congress. Office for Subject Cataloging Policy, Library of Congress. Cataloging Policy and Support Office, & Library of Congress. Policy and Standards Division. (1993). Library of Congress subject headings (16th. ed.). Library of Congress.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLibrary of Congress, Library of Congress. Subject Cataloging Division, Library of Congress. Office for Subject Cataloging Policy, Library of Congress. Cataloging Policy and Support Office, और Library of Congress. Policy and Standards Division. Library of Congress Subject Headings. 16th. ed. Washington: Library of Congress, 1993.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLibrary of Congress, et al. Library of Congress Subject Headings. 16th. ed. Library of Congress, 1993.