7. "Metalúrgicos do Rio: Aliança de Golbery, Chagas, Sílvio e do H.P. [Hora do Povo]." Movimento, (1980 December 8-14).

7. "Metalúrgicos do Rio: Aliança de Golbery, Chagas, Sílvio e do H.P. [Hora do Povo]." Movimento, (1980 December 8-14)., Box: 25. 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/375622 Accessed September 26, 2026.