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 USA, pp. 1277-1279. Cf. "Library 2.0 and the Problem of Hate Speech," Margaret Brown-Sica e Jeffrey Beall, Electronic Journal of Academic and Special Librarianship, vol. 9 no. 2 (Summer 2008).
Fantini, João Angelo, coordinator. Dunker, Christian Ingo Lenz, author. Raízes da intolerância. [S.l.: s.n.] OCLC910881164 !CS1 manut: Nomes múltiplos: lista de autores (link)
