K. Ratajczak, „Krzysztof Ożóg, The Role of Poland in the Intellectual Development of Europe in the Middle Ages [Krakow Historical Monographs, vol. I], Societas Vistulana, Kraków 2009, ss. 231”., 10.14746/bhw, nr 28, s. 187–190, sty. 2012.