Cataloging rules of the American Library Association and the Library of Congress.
Additions and changes, 1949-1958.

APA Citation

Library of Congress. Descriptive Cataloging Division., American Library Association. Division of Cataloging and Classification. (1959). Cataloging rules of the American Library Association and the Library of Congress: Additions and changes, 1949-1958. Washington: Library of Congress.

MLA Citation

Library of Congress. Descriptive Cataloging Division, and American Library Association. Division of Cataloging and Classification. Cataloging Rules of the American Library Association And the Library of Congress: Additions And Changes, 1949-1958. Washington: Library of Congress, 1959.