Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

United States. Library of Congress y Library of Congress. Policy and Standards Division. Library of Congress Classification. T. Technology. [2009 ed.]. Washington, D.C: Library of Congress, Cataloging Distribution Service, 2009.

Cita MLA (9a ed.)

United States. Library of Congress y Library of Congress. Policy and Standards Division. Library of Congress Classification. T. Technology. [2009 ed.]. Library of Congress, Cataloging Distribution Service, 2009.