Columbia subject headings:
Guittone, d'Arezzo, -1294.
Italian poetry--To 1400--History and criticism.
Harvard subject headings:
Guittone, d'Arezzo, -1294.
Italian poetry--To 1400--History and criticism
Princeton subject headings:
Guittone, d'Arezzo, -1294.
Italian poetry--Early to 1400--History and criticism.