APA-referens

(2006). Library of congress Subject Headings. Washington, D.C: Library of Congress, Cataloging Distribution Service.

Chicago-stil citat

Library of Congress Subject Headings. Washington, D.C: Library of Congress, Cataloging Distribution Service, 2006.

MLA-referens

Library of Congress Subject Headings. Washington, D.C: Library of Congress, Cataloging Distribution Service, 2006.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.