Columbia subject headings:
Harvard subject headings:
Abū al-ʻAlāʾ al-Maʻarrī, 973-1057. Risālat al-ghufrān.
Dante Alighieri, 1265-1321. Divina commedia.
Princeton subject headings:
Abū al-ʻAlāʾ al-Maʻarrī, 973-1057. Risālat al-ghufrān.