KOPP, Achim. Evidence of Convergence in Pennsylvania German. Yearbook of German-American Studies, [S. l.], v. 2, p. 49–66, 2006. DOI: 10.17161/ygas.v2i.18920. Disponível em: https://journals.ku.edu/ygas/article/view/18920. Acesso em: 6 apr. 2025.