Koestler-Grack, R. A. (2006). Leonardo da Vinci: Artist, inventor, and Renaissance man. Chelsea House Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKoestler-Grack, Rachel A. Leonardo Da Vinci: Artist, Inventor, and Renaissance Man. Philadelphia: Chelsea House Publishers, 2006.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKoestler-Grack, Rachel A. Leonardo Da Vinci: Artist, Inventor, and Renaissance Man. Chelsea House Publishers, 2006.
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