Dante, A., & Musa, M. (1985). Purgatory. Penguin Books.
Lua i Stíl Chicago (17ú heag.)Dante, Alighieri, agus Mark Musa. Purgatory. New York: Penguin Books, 1985.
Lua MLA (9ú heag.)Dante, Alighieri, agus Mark Musa. Purgatory. Penguin Books, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.