5. "Debate: Contra o dogmatismo e o anarquismo."Companheiro no. 58, (5-18 August 1981).

5. "Debate: Contra o dogmatismo e o anarquismo."Companheiro no. 58, (5-18 August 1981)., Box: 13. 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/373420 Accessed September 26, 2026.