Johannes von Freiburg, Vortoma, H., Chalybs, P., Koberger, H., & Sacon, J. (1518). Summa confessorum reverendi patris Joannis de Friburgo sacre theologie lectoris: Ordinis predicatorum, non modo utilis: sed [et] Christi omnium pastoribus perq[uam] necessaria . Luguduni [!]: impensis Joannis Koberger.

Johannes von Freiburg, Henricus Vortoma, Peter Chalybs, Hans Koberger, and Jacques Sacon. Summa Confessorum Reverendi Patris Joannis De Friburgo Sacre Theologie Lectoris: Ordinis Predicatorum, Non Modo Utilis: Sed [et] Christi Omnium Pastoribus Perq[uam] Necessaria . Luguduni [!]: impensis Joannis Koberger, 1518.

Johannes von Freiburg, et al. Summa Confessorum Reverendi Patris Joannis De Friburgo Sacre Theologie Lectoris: Ordinis Predicatorum, Non Modo Utilis: Sed [et] Christi Omnium Pastoribus Perq[uam] Necessaria . Luguduni [!]: impensis Joannis Koberger, 1518.