5James G. McGann. "Think Tanks and Civil Societies Program: 2012 Global Go-To Think Tanks Report and Policy Advice", 2012. http://www, gotothinktank, com/2012-global-goto-tank-index-report/.
6约翰·弥尔顿.《论出版自由》,北京,商务印书馆,1958.
7Terry Eastland. Freedom of Expression in the Supreme Court : The Defining Cases. Maryland: Rowman Littlefield Publishers, Inc. , 2000; T. Barton Carter, Marc A. Franklin, Jay B. Wright. The First Amendment and the Fourth Estate. New York.. Foundation Press, 1985.
8罗纳德·科斯.《商品市场和思想市场》,载《美国经济评论》,1974(64).
9Jerome A. Barron. "Access to the Press; A New First Amendment Right". Harvard Law Review, 1967 (80) .. 1641.