APA (7e ed.) Bronvermelding

Clark, K. (1958). Leonardo da Vinci: An account of his development as an artist (Überarbeitete Auflage.). Penguin.

Chicago (17e ed.) Bronvermelding

Clark, Kenneth. Leonardo Da Vinci: An Account of His Development as an Artist. Überarbeitete Auflage. Harmondsworth: Penguin, 1958.

MLA (8e ed.) Bronvermelding

Clark, Kenneth. Leonardo Da Vinci: An Account of His Development as an Artist. Überarbeitete Auflage. Penguin, 1958.