7. "Metalúrgicos iniciam luta por melhorias."A Tarde, (1982 April 28).

7. "Metalúrgicos iniciam luta por melhorias."A Tarde, (1982 April 28)., 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/375528 Accessed September 26, 2026.