FAVRETTO, R. (2010). GIGGLERS: LEONARDO'S SPOT OF TROUBLE. BLAKE EDUCATION.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFAVRETTO, ROBERT. GIGGLERS: LEONARDO'S SPOT OF TROUBLE. CLAYTON SOUTH: BLAKE EDUCATION, 2010.
एमएलए (9वां संस्करण) प्रशस्ति पत्रFAVRETTO, ROBERT. GIGGLERS: LEONARDO'S SPOT OF TROUBLE. BLAKE EDUCATION, 2010.
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