9. "Dia 27 reúnem-se os líderes do Partido dos Trabalhadores."Liberal, (1980 January 12).

9. "Dia 27 reúnem-se os líderes do Partido dos Trabalhadores."Liberal, (1980 January 12)., Box: 16. 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/373885 Accessed September 27, 2026.