Citazione Stile APA (7a Edizione)

Library of Congress. Office for Subject Cataloging Policy & United States. Library of Congress. (1990). LC classification. Class D, subclasses DL-DR. History of Europe, part 2 (3rd ed.). Library of Congress.

Citazione stile Chigago Style (17a edizione)

Library of Congress. Office for Subject Cataloging Policy e United States. Library of Congress. LC Classification. Class D, Subclasses DL-DR. History of Europe, Part 2. 3rd ed. Washington: Library of Congress, 1990.

Citatione MLA (9a ed.)

Library of Congress. Office for Subject Cataloging Policy e United States. Library of Congress. LC Classification. Class D, Subclasses DL-DR. History of Europe, Part 2. 3rd ed. Library of Congress, 1990.