Horch, Rosemarie Erika. “Brazil and Its Radical Left: An Annoteted Bibliography on the Communist Movement and the Rise of the Marxism 1922-1972”. Revista do Instituto de Estudos Brasileiros, no. 23 (dezembro 31, 1981): 127–129. Acessado julho 21, 2024. https://revistas.usp.br/rieb/article/view/69661.