3. Conferência Nacional (Consultiva) do PC do B. "Elementos de tática sindical.Anteprojeto.", 1981 March

3. Conferência Nacional (Consultiva) do PC do B. "Elementos de tática sindical.Anteprojeto.", 1981 March, Box: 3. 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/371734 Accessed September 27, 2026.