Παραπομπή σε μορφή APA (7η εκδ.)

United States Library of Congress. (1995). Subject headings (18th ed.). Library of Congress, Cataloging Distribution Service.

Παραπομπή σε μορφή Chicago (17η εκδ.)

United States Library of Congress. Subject Headings. 18th ed. Washington, D.C: Library of Congress, Cataloging Distribution Service, 1995.

Παραπομπή σε μορφή MLA (9th εκδ.)

United States Library of Congress. Subject Headings. 18th ed. Library of Congress, Cataloging Distribution Service, 1995.