Quaestiones variae. - Etzkorn, Girard J., <1927- >. (OLS)http://semarc/name/90578; Guillelmus : de Occam <ofm ; 1290-1350>. (OLS)http://semarc/name/89160; Kelley, Francis E. (OLS)http://semarc/name/16146 (Opera philosophica et theologica)