1. União da Juventude Socialista. "Em defesa da juventude e do socialismo." São Paulo:, undated

1. União da Juventude Socialista. "Em defesa da juventude e do socialismo." São Paulo:, undated, Box: 10. 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/372912 Accessed September 26, 2026.