(1998). Library of Congress subject headings. Wash., D.C: Libr. of Congress, Cataloging Distribution Service.
Chicago Style aipamenaLibrary of Congress Subject Headings. Wash., D.C: Libr. of Congress, Cataloging Distribution Service, 1998.
MLA aipamenaLibrary of Congress Subject Headings. Wash., D.C: Libr. of Congress, Cataloging Distribution Service, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.