APA (7th ed.) Citation

Library of Congress. Cataloging Distribution Service. (1985). Catalog cards. Library of Congress, Cataloging Distribution Service.

Chicago Style (17th ed.) Citation

Library of Congress. Cataloging Distribution Service. Catalog Cards. [Washington, D.C.?]: Library of Congress, Cataloging Distribution Service, 1985.

MLA (9th ed.) Citation

Library of Congress. Cataloging Distribution Service. Catalog Cards. Library of Congress, Cataloging Distribution Service, 1985.

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