APA (7th ed.) Citation

United States. Library of Congress. Library of Congress classification system [poster]. Cataloging Distribution Service.

Chicago Style (17th ed.) Citation

United States. Library of Congress. Library of Congress Classification System [poster]. Washington, D.C: Cataloging Distribution Service.

MLA (9th ed.) Citation

United States. Library of Congress. Library of Congress Classification System [poster]. Cataloging Distribution Service.

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