United States. Library of Congress & Library of Congress. Cataloging Policy and Support Office. (2008). Library of Congress classification. J. Political science (2008 ed.). Library of Congress, Cataloging Distribution Service.

United States. Library of Congress and Library of Congress. Cataloging Policy and Support Office. Library of Congress Classification. J. Political Science. 2008 ed. Washington, D.C: Library of Congress, Cataloging Distribution Service, 2008.

United States. Library of Congress and Library of Congress. Cataloging Policy and Support Office. Library of Congress Classification. J. Political Science. 2008 ed. Library of Congress, Cataloging Distribution Service, 2008.