20. "Marx sim, marxismo não." Senhor 197/198, (26 December 1984-1985 January 2).

20. "Marx sim, marxismo não." Senhor 197/198, (26 December 1984-1985 January 2)., Box: 20. Eduardo Sarno Collection of Leftist Movements in Brazil, 2002-03. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/374771 Accessed September 27, 2026.