ROBA, William. Forgotten German-Iowan Alternatives. Yearbook of German-American Studies, [S. l.], v. 38, p. 99–112, 2003. DOI: 10.17161/ygas.v38i.19045. Disponível em: https://journals.ku.edu/ygas/article/view/19045. Acesso em: 30 mar. 2025.