Deustua, José. “SNELL, John L. Y Hans A. Schmitt: The Democratic Movement in Germany,1789-1914, The University of North Carolina Press, 1976”. Histórica 1, no. 2 (December 1, 1977): 295–299. Accessed April 22, 2026. https://revistas.pucp.edu.pe/index.php/historica/article/view/7809.