APA

Sharp D. E., . (1930). Franciscan philosophy at Oxford in the thirteenth century. London: Oxford University Press.

Chicago

Sharp D E, . 1930. Franciscan philosophy at Oxford in the thirteenth century. London: Oxford University Press.

Harvard

Sharp D. E., . (1930). Franciscan philosophy at Oxford in the thirteenth century. London: Oxford University Press.

MLA

Sharp D E, . Franciscan philosophy at Oxford in the thirteenth century. London: Oxford University Press. 1930.