Library of Congress, Gale Research Inc, Library of Congress. Cataloging Policy and Support Office, & Library of Congress. Subject Cataloging Division. (1993). Classification. Class C. Auxiliary sciences of history (4th ed.). The Library For sale by the Cataloging Distribution Service.

Library of Congress, Gale Research Inc, Library of Congress. Cataloging Policy and Support Office, and Library of Congress. Subject Cataloging Division. Classification. Class C. Auxiliary Sciences of History. 4th ed. Washington: The Library For sale by the Cataloging Distribution Service, 1993.

Library of Congress, et al. Classification. Class C. Auxiliary Sciences of History. 4th ed. The Library For sale by the Cataloging Distribution Service, 1993.