Alighieri, Dante The divine comedy : Purgatorio / Dante Alighieri translated by Charles S. Singleton - Princeton : Princeton University Press, c1973. - ill. ; 21 cm. - Bollingen series . ISBN: 0691019096 LCCN: Subjects--Topical Terms: Poetry LC Class. No.: PQ4315.3 / .S56 1973 Dewey Class. No.: 851.1 / A411d