28. "Fatos e negócios. As diferenças entre IGP e IPCA." A Tarde, (1985 December 3).

28. "Fatos e negócios. As diferenças entre IGP e IPCA." A Tarde, (1985 December 3)., Box: 20. 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/374696 Accessed September 27, 2026.