JEHLE, Frank. Alfred Borter, René Zihlmann, Urban Fink und Max Stierlin, Katholiken im Kanton Zürich, 2014. Zwingliana, [S. l.], v. 44, p. 524–526, 2020. Disponível em: https://zwingliana.ch/index.php/zwa/article/view/2506. Acesso em: 3 juli. 2024.