Clark, K. (1968). The drawing of the Leonardo Da Vinci in the collection of Her mejesty the queen at windor castle (2nd.). Phaidon.
استشهاد بنمط شيكاغوClark, Kenneth. The Drawing of the Leonardo Da Vinci in the Collection of Her Mejesty the Queen at Windor Castle. 2nd. New york: Phaidon, 1968.
MLA استشهادClark, Kenneth. The Drawing of the Leonardo Da Vinci in the Collection of Her Mejesty the Queen at Windor Castle. 2nd. Phaidon, 1968.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.