एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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