Nockleby, John T. (2000), "Hate Speech" in Encyclopedia of the American Constitution, ed. Leonard W. Levy and Kenneth L. Karst, vol. 3. (2nd ed.), Detroit: Macmillan Reference US, pp. 1277–79. Cited in "Library 2.0 and the Problem of Hate Speech," by Margaret Brown-Sica and Jeffrey Beall, Electronic Journal of Academic and Special Librarianship, vol. 9 no. 2 (Summer 2008).
