APA (7th ed.) Citation

United States. Library of Congress. Office for Descriptive Cataloging Policy. (1981). Bibliographic description of rare books. Library of Congress.

Chicago Style (17th ed.) Citation

United States. Library of Congress. Office for Descriptive Cataloging Policy. Bibliographic Description of Rare Books. Washington, D. C: Library of Congress, 1981.

MLA (9th ed.) Citation

United States. Library of Congress. Office for Descriptive Cataloging Policy. Bibliographic Description of Rare Books. Library of Congress, 1981.