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.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Library of Congress, Gale Research Inc, Library of Congress. Cataloging Policy and Support Office, và 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.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)Library of Congress, et al. Classification. Class C. Auxiliary Sciences of History. 4th ed. The Library For sale by the Cataloging Distribution Service, 1993.