DEUSTUA, José. SNELL, John L. y Hans A. Schmitt: The Democratic Movement in Germany,1789-1914, The University of North Carolina Press, 1976. Histórica, [S. l.], v. 1, n. 2, p. 295–299, 1977. DOI: 10.18800/historica.197702.009. Disponível em: https://revistas.pucp.edu.pe/index.php/historica/article/view/7809. Acesso em: 28 dic. 2025.