1. "A ditadura e a hegemonia da oligarquia monopolista." N.p.:, undated

1. "A ditadura e a hegemonia da oligarquia monopolista." N.p.:, undated, Box: 11, Folder: 17. 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/373196 Accessed September 26, 2026.