APA (7 वां संस्करण) प्रशस्ति पत्र

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

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

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

एमएलए (8वां संस्करण) प्रशस्ति पत्र

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