Clark, K. (1968). The Drawings of Leonardo Da Vinchi: In the collection of her majesty the queen at Windsor castle. (2nd ed.). Phaidon.
Citazione stile Chigago Style (17a edizione)Clark, Kenneth. The Drawings of Leonardo Da Vinchi: In the Collection of Her Majesty the Queen at Windsor Castle. 2nd ed. London: Phaidon, 1968.
Citatione MLA (9a ed.)Clark, Kenneth. The Drawings of Leonardo Da Vinchi: In the Collection of Her Majesty the Queen at Windsor Castle. 2nd ed. Phaidon, 1968.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.