4.Linha Direta no. 4 [Comissão Executiva do DR de São Paulo], (1990 May 11).

4.Linha Direta no. 4 [Comissão Executiva do DR de São Paulo], (1990 May 11)., Box: 11. 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/373190 Accessed September 26, 2026.