Tohutoro APA (7th ed.)
Saba, U., & Deidier, R. (1997). Lettere a Sandro Penna, 1929-1940. Archinto.
Tohutoru Kātū Chicago (17th ed.)
Saba, Umberto, me Roberto Deidier. Lettere a Sandro Penna, 1929-1940. Milano: Archinto, 1997.
Tohutoro MLA (9th ed.)
Saba, Umberto, me Roberto Deidier. Lettere a Sandro Penna, 1929-1940. Archinto, 1997.
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