24. Ferreira, Benjamim, et al. "Construir a CUT no CONCLAT-83: Preparar a greve geral." N.p.:, undated

24. Ferreira, Benjamim, et al. "Construir a CUT no CONCLAT-83: Preparar a greve geral." N.p.:, undated, Box: 24. 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/375215 Accessed September 26, 2026.