Lynn, R. H. (1964). The divine comedy, v.2: The Purgatorio ; notes. Cliff's Notes.
Lua i Stíl Chicago (17ú heag.)Lynn, Robert H. The Divine Comedy, V.2: The Purgatorio ; Notes. Lincoln, Neb: Cliff's Notes, 1964.
Lua MLA (9ú heag.)Lynn, Robert H. The Divine Comedy, V.2: The Purgatorio ; Notes. Cliff's Notes, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.