Giorgio Vasari, Lives of the Most Eminent Painters, Sculptors and Architects (London: Macmillan, 1912): 352–353.

Michelangelo’s David, Галерея Академии, Флоренция, Италия, http://www.accademia.org/explore-museum/artworks/michelangelos-david; Fiachra Gibbons, The Perfect Man’s Chiseled Squint, Guardian, 07.06.2000.