Büsser, F. „Conrad Grebel’s Programmatic Letters of 1524, With Facsimiles of the Original German Script of Grebel’s Letters, Transcribed and Translated by J.C. Wenger, Scottdale/PA 1970“. Zwingliana, Bd. 13, Nr. 3, Januar 2010, S. 222, https://zwingliana.ch/index.php/zwa/article/view/1030.