9. "Esquerdas desafiam Jader [Jader Barbalho, governor of Pará] hoje em Belém."Jornal da Bahia, (1984 October 12).

9. "Esquerdas desafiam Jader [Jader Barbalho, governor of Pará] hoje em Belém."Jornal da Bahia, (1984 October 12)., Box: 13. 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/373424 Accessed September 26, 2026.