2.Frente Operária ano XXVIII, no. 372 [Porta-voz do pensamento posadista no Brasil], (1980 December 10?23).

2.Frente Operária ano XXVIII, no. 372 [Porta-voz do pensamento posadista no Brasil], (1980 December 10?23)., Box: 6. 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/372411 Accessed September 26, 2026.