The Sphere of Sacrobosco and its commentators.
APA Citation
Thorndike, L., Robertus, A., Sacro Bosco, J. de. (1949). The Sphere of Sacrobosco and its commentators. Chicago: Universitay of Chicago Press.
MLA Citation
Thorndike, Lynn, 1882-1965, Anglicus Robertus, and Joannes de Sacro Bosco. The Sphere of Sacrobosco And Its Commentators. Chicago: Universitay of Chicago Press, 1949.
Warning: These citations may not always be complete (especially for serials).