FRICK, A. Bitte an die Heimatforscher Hohenzollerns. Zollerheimat, [S. l.], v. 3, n. 9, p. 48, 1934. DOI: 10.53458/zh.v3i9.8983. Disponível em: https://journals.wlb-stuttgart.de/index.php/zh/article/view/8983. Acesso em: 22 juni. 2025.