Boyer, P. S. (2002). Purity in Print: Book Censorship in America from the Gilded Age to the Computer Age (2nd ed.). University of Wisconsin Press.
Cita Chicago Style (17a ed.)Boyer, Paul S. Purity in Print: Book Censorship in America from the Gilded Age to the Computer Age. 2nd ed. Madison, Wis.: University of Wisconsin Press, 2002.
Cita MLA (8a ed.)Boyer, Paul S. Purity in Print: Book Censorship in America from the Gilded Age to the Computer Age. 2nd ed. University of Wisconsin Press, 2002.
Precaución: Estas citas no son 100% exactas.