APA

O'Brien E., . (2015). The commentaries of Pope Pius II (1458-1464) and the crisis of the fifteenth-century papacy. Toronto: University of Toronto Press.

Chicago

O'Brien Emily, . 2015. The commentaries of Pope Pius II (1458-1464) and the crisis of the fifteenth-century papacy. Toronto: University of Toronto Press.

Harvard

O'Brien E., . (2015). The commentaries of Pope Pius II (1458-1464) and the crisis of the fifteenth-century papacy. Toronto: University of Toronto Press.

MLA

O'Brien Emily, . The commentaries of Pope Pius II (1458-1464) and the crisis of the fifteenth-century papacy. Toronto: University of Toronto Press. 2015.