1: Guillelmi de Conchis Dragmaticon philosophiae - Guilelmus : de Conchis <scolastico ; 1080-ca. 1154>. (OLS)http://semarc/name/89606; Badia, Lola. (OLS)http://semarc/name/30140; Pujol, Josep. (OLS)http://semarc/name/30142; Ronca, Italo. (OLS)http://semarc/name/30141 (Guillelmi de Conchis Opera omnia, 1997)
Summa de philosophia in vulgari