ENGLE, Stephen D. "Yankee Dutchman": The Early Life of Franz Sigel. Yearbook of German-American Studies, [S. l.], v. 26, p. 43–62, 1991. DOI: 10.17161/ygas.v26i.19238. Disponível em: https://journals.ku.edu/ygas/article/view/19238.. Acesso em: 13 may. 2024.