APA (7th ed.) Citation

Library of Congress. (1991). Library of Congress subject headings. Cataloging Distribution Service, Library of Congress.

Chicago Style (17th ed.) Citation

Library of Congress. Library of Congress Subject Headings. Washington: Cataloging Distribution Service, Library of Congress, 1991.

MLA (9th ed.) Citation

Library of Congress. Library of Congress Subject Headings. Cataloging Distribution Service, Library of Congress, 1991.

Warning: These citations may not always be 100% accurate.