APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.