APA (7th ed.) Citation

Library of Congress. (1948). Cumulative catalog of Library of Congress printed cards. Libr. of Congress.

Chicago Style (17th ed.) Citation

Library of Congress. Cumulative Catalog of Library of Congress Printed Cards. Washington, DC: Libr. of Congress, 1948.

MLA (9th ed.) Citation

Library of Congress. Cumulative Catalog of Library of Congress Printed Cards. Libr. of Congress, 1948.