Clark, K., Pedretti, C., & Leonardo da Vinci. (1969). The drawings of Leonardo da Vinci in the collection of Her Majesty the Queen at Windsor Castle (2. Ed.). London [u.a.]: Phaidon Pr.
Παραπομπή Chicago StyleClark, Kenneth, Carlo Pedretti, και Leonardo da Vinci. The Drawings of Leonardo Da Vinci in the Collection of Her Majesty the Queen At Windsor Castle. 2. Ed. London [u.a.]: Phaidon Pr, 1969.
Παραπομπή MLAClark, Kenneth, Carlo Pedretti, και Leonardo da Vinci. The Drawings of Leonardo Da Vinci in the Collection of Her Majesty the Queen At Windsor Castle. 2. Ed. London [u.a.]: Phaidon Pr, 1969.
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