APA সাইটেশন

(1997). Library of Congress Subject Headings. Washington, D.C: Library of Congress, Cataloging Distribution Service.

শিকাগো স্টাইলে সাইটেশন

Library of Congress Subject Headings. Washington, D.C: Library of Congress, Cataloging Distribution Service, 1997.

এমএলএ সাইটেশন

Library of Congress Subject Headings. Washington, D.C: Library of Congress, Cataloging Distribution Service, 1997.