Library of Congress & Subjet Cataloging Division. (2007). Library of Congress Subject Headings (30th ed.). The National Bibliographic Service.
Chicago-referens (17:e uppl.)Library of Congress och Subjet Cataloging Division. Library of Congress Subject Headings. 30th ed. Washington: The National Bibliographic Service, 2007.
MLA-referens (9:e uppl.)Library of Congress och Subjet Cataloging Division. Library of Congress Subject Headings. 30th ed. The National Bibliographic Service, 2007.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.