Guidonis de Orchellis Tractatus de sacramentis ex eius Summa de sacramentis et officiis ecclesiae / editus studio et cura pp. Damiani et Odulphi Van den Eynde ; accedit summarium eiusdem Tractatus e codice Duacensi 434 I
. – St. Bonaventure (NY) : The Franciscan Institute, 1953
. – XLVII, 365 p. ; 22 cm
. – (Franciscan Institute Publications. Text series ; 4)