May, I. (1959). Collins italian gem dictionary. Italian-english, english italian. Collins Clear-Type Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMay, Isopel. Collins Italian Gem Dictionary. Italian-english, English Italian. Gran Bretaña: Collins Clear-Type Press, 1959.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMay, Isopel. Collins Italian Gem Dictionary. Italian-english, English Italian. Collins Clear-Type Press, 1959.
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