3. "O socialismo petista (Proposta de resolução sintética)." N.p.:, 1990 May.

3. "O socialismo petista (Proposta de resolução sintética)." N.p.:, 1990 May., Box: 11. 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/373184 Accessed September 26, 2026.