Masci, Saudro, author
Gremesse, 2006
Buku Referensi
Alighieri, Dante, author
La Nuova Italia, 1957
Buku Teks
Paatz, Walter
Antwerpen Spectrum 1953
Buku Teks
Maria, Luigi Santa
Roma Is.I.A.O 1998
Buku Referensi
Cortelazze, Manlio
Tubingen Gunter Narr Verlag 1979
Buku Teks