Keith, L., Roy, A., Morrison, R., & Schade, P. Leonardo da Vinci's Virgin of the Rocks: Treatment, Technique and Display. Leonardo da Vinci : Pupil, Painter and Master.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKeith, Larry, Ashok Roy, Rachel Morrison, और Peter Schade. "Leonardo Da Vinci's Virgin of the Rocks: Treatment, Technique and Display." Leonardo Da Vinci : Pupil, Painter and Master .
एमएलए (8वां संस्करण) प्रशस्ति पत्रKeith, Larry, et al. "Leonardo Da Vinci's Virgin of the Rocks: Treatment, Technique and Display." Leonardo Da Vinci : Pupil, Painter and Master, .
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