Barbosa, P. P. L. Os Sindicatos Corporativistas No Brasil Entre Os Anos De 1934 E 1939 (The Corporatist Trade Unions in Brazil Between the Years of 1934 and 1939) - DOI: 10.5752 P.2237-8871.2014v15n23p107. Cad. Hist. 2014, 15, 107-129.