Lua APA (7ú heag.)

Schnapp, J. T. Introduction to "Purgatorio": Jeffrey T. Schnapp. The Cambridge companion to Dante.(2007).

Lua i Stíl Chicago (17ú heag.)

Schnapp, Jeffrey T. "Introduction to "Purgatorio": Jeffrey T. Schnapp." The Cambridge Companion to Dante.(2007) .

Lua MLA (8ú heag.)

Schnapp, Jeffrey T. "Introduction to "Purgatorio": Jeffrey T. Schnapp." The Cambridge Companion to Dante.(2007), .

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.