1. Rawcliffe C. Sources for the history of medicine in late Medieval England. Kalamazoo: Western Michigan University; 1995.
2. Getz FM, editor. Healing and society in Medieval England: a Middle English translation of the pharmaceutical writings of Gilbertus Anglicus. Madison: Wisconsin University Press; 1991.
3. von Fleischhacker R, editor. Lanfrank’s “Science of Cirurgie”. Oxford: Oxford University Press (Early English Text Society); 1894. p. 102.
4. Robinson FN, editor. The works of Geoffrey Chaucer. Oxford: Oxford University Press; 1970.
5. Dawson WR, editor. A leechbook or collection of medical recipes of the fifteenth century. London: Macmillan; 1934.