Groń, Ryszard. 2005. “Truth As Gift. Studies in Medieval Cistercian History in Honour of John R. Sommerfeldt, Ed. Marsha L. Dutton - Daniel M. LaCorte - Paul Lockey, Kałamazoo Mich. 2004, Cistercian Publications, Ss. 588”. Vox Patrum 48 (June):411-15. https://doi.org/10.31743/vp.8745.