6. Comitê Municipal de São Paulo. "Carta do CM-SP ao C.C." Sao Paulo:, 1980 April 21.

6. Comitê Municipal de São Paulo. "Carta do CM-SP ao C.C." Sao Paulo:, 1980 April 21., Box: 7. 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/372530 Accessed September 26, 2026.