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Karst, Kenneth L. Nixon v. Condon 286 U.S. 73 (1932). Encyclopedia of the American Constitution. – 通过HighBeam Research . 1986 [June 25, 2013]. (原始内容存档于2014-06-10).
Karst, Kenneth L. Terry v. Adams 345 U.S. 461 (1953). Encyclopedia of the American Constitution. – 通过HighBeam Research . 1986 [2013-09-03]. (原始内容存档于2014-06-11).
Newman, Roger K. Brown, John R.. The Scribner Encyclopedia of American Lives. – 通过HighBeam Research . 2001-01-01 [2013-09-03]. (原始内容存档于2013-06-28).
Twenty-fourth Amendment. Constitutional Amendments: From Freedom of Speech to Flag Burning. – 通过HighBeam Research . 2008-01-01 [2013-09-03]. (原始内容存档于2014-06-10).
Karst, Kenneth L. Nixon v. Herndon 273 U.S. 536 (1927). Encyclopedia of the American Consitution. – 通过HighBeam Research . 1986 [2013-09-03]. (原始内容存档于2014-06-10).
Karst, Kenneth L. Nixon v. Condon 286 U.S. 73 (1932). Encyclopedia of the American Constitution. – 通过HighBeam Research . 1986 [June 25, 2013]. (原始内容存档于2014-06-10).
Karst, Kenneth L. Terry v. Adams 345 U.S. 461 (1953). Encyclopedia of the American Constitution. – 通过HighBeam Research . 1986 [2013-09-03]. (原始内容存档于2014-06-11).
Twenty-fourth Amendment. Constitutional Amendments: From Freedom of Speech to Flag Burning. – 通过HighBeam Research . 2008-01-01 [2013-09-03]. (原始内容存档于2014-06-10).