Library of Congress., & Library of Congress. Policy and Standards Division. (2011). Library of Congress classification. E-F. History: America (2011 edition.). Washington, D.C.: Library of Congress, Cataloging and Distribution Service.

Library of Congress., and Library of Congress. Policy and Standards Division. Library of Congress Classification. E-F. History: America. 2011 edition. Washington, D.C.: Library of Congress, Cataloging and Distribution Service, 2011.

Library of Congress., and Library of Congress. Policy and Standards Division. Library of Congress Classification. E-F. History: America. 2011 edition. Washington, D.C.: Library of Congress, Cataloging and Distribution Service, 2011.