HOYT, Giles R. Herman Zagel’s Jack Roostand: A German-American View of Prairie Life. Yearbook of German-American Studies, [S. l.], v. 38, p. 113–118, 2003. DOI: 10.17161/ygas.v38i.19046. Disponível em: https://journals.ku.edu/ygas/article/view/19046. Acesso em: 30 mar. 2025.