Clark, K. (1961). Leonardo da Vinci: An account of his development as an artist (Revised edition 1958.). Penguin Books.
Cita Chicago Style (17a ed.)Clark, Kenneth. Leonardo Da Vinci: An Account of His Development as an Artist. Revised edition 1958. Baltimore: Penguin Books, 1961.
Cita MLA (9a ed.)Clark, Kenneth. Leonardo Da Vinci: An Account of His Development as an Artist. Revised edition 1958. Penguin Books, 1961.
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