1. Ladeira, Cipriano. "Informe [interno] sobre o I CONCUT." São Bernardo do Campo-São Paulo:, 1984 August.

1. Ladeira, Cipriano. "Informe [interno] sobre o I CONCUT." São Bernardo do Campo-São Paulo:, 1984 August., Box: 1. 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/371208 Accessed September 27, 2026.