Leonardo da Vinci: REFERENCES

Richter, J.-P. 1883 (reprinted 1970). The Notebooks of Leonardo da Vinci: Compiled and Edited from the Original Manuscripts. Dover Publications, New York.

Vasari, G. (B. Burroughs, ed.) 1946. Lives of the Artists: Biographies of the Most Eminent Architects, Painters and Sculptors of Italy. Simon and Schuster, New York.