APA (7 ম সংস্করণ) উদ্ধৃতি

United States. Library of Congress & Library of Congress. Policy and Standards Division. (2009). Library of Congress classification. Q. Science ([2009 ed.].). Library of Congress, Cataloging Distribution Service.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

United States. Library of Congress এবং Library of Congress. Policy and Standards Division. Library of Congress Classification. Q. Science. [2009 ed.]. Washington, D.C: Library of Congress, Cataloging Distribution Service, 2009.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

United States. Library of Congress এবং Library of Congress. Policy and Standards Division. Library of Congress Classification. Q. Science. [2009 ed.]. Library of Congress, Cataloging Distribution Service, 2009.