SCHMIDT-CLAUSING, Fritz. Johann Ulrich Surgant: ein Wegweiser des jungen Zwingli. Zwingliana, [S. l.], v. 11, n. 5, p. 287–320, 1961. DOI: 10.69871/3s7jj735. Disponível em: https://zwingliana.ch/article/view/7142. Acesso em: 16 feb. 2025.