@book {Witkowski 2009, title = {Michael of Prague O. Cart.: De quatuor virtutibus cardinalibus pro eruditione principum (Book II-IV). A critical text and study}, series = {Analecta Cartusiana}, number = {6:2}, year = {2009}, note = {Recensie.}, pages = {IV-333}, address = {Salzburg}, keywords = {Michael Pragensis O.Cart.: De quatuor virtutibus cardinalibus pro eruditione principum (editio), vitia \& virtutes}, author = {Witkowski, Rafa{\l}} }