5.Boletim Informativo do Sindicato dos Engenheiros da Bahia ano IV, no. 14, (1985 March-April).

5.Boletim Informativo do Sindicato dos Engenheiros da Bahia ano IV, no. 14, (1985 March-April)., Box: 25. 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/375799 Accessed September 26, 2026.