APA (7th ed.) Citation

Library of Congress. Policy and Standards Division. (2009). Library of Congress subject headings (31st ed.). Library of Congress, Cataloging Distribution Service.

Chicago Style (17th ed.) Citation

Library of Congress. Policy and Standards Division. Library of Congress Subject Headings. 31st ed. Washington, D.C: Library of Congress, Cataloging Distribution Service, 2009.

MLA (9th ed.) Citation

Library of Congress. Policy and Standards Division. Library of Congress Subject Headings. 31st ed. Library of Congress, Cataloging Distribution Service, 2009.