3. Ribeiro, Marcos Aurélio et al. Assembléia Constituinte de todo o povo, livre, democrática e soberana. N.p.:, 1981 January.

3. Ribeiro, Marcos Aurélio et al. Assembléia Constituinte de todo o povo, livre, democrática e soberana. N.p.:, 1981 January., Box: 16. 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/373866 Accessed September 25, 2026.