Freud, S. (1984). Leonards Da Vinci: A memory of his child hood. ARK Paper backs.
استشهاد بنمط شيكاغوFreud, Sigmond. Leonards Da Vinci: A Memory of His Child Hood. London: ARK Paper backs, 1984.
MLA استشهادFreud, Sigmond. Leonards Da Vinci: A Memory of His Child Hood. ARK Paper backs, 1984.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.