Brandeis, I. (1962). The ladder of vision: A study on Dante's Comedy. Doubleday.
Lua i Stíl Chicago (17ú heag.)Brandeis, Irma. The Ladder of Vision: A Study on Dante's Comedy. Garden City, N. Y: Doubleday, 1962.
Lua MLA (9ú heag.)Brandeis, Irma. The Ladder of Vision: A Study on Dante's Comedy. Doubleday, 1962.
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