Frank Zollner (2003). Leonardo da Vinci: The entire Paintings and Drawings. Taschen. ISBN 3-8228-1734-1
The article States that Leonardo da Vinci was born April 15, 1452 in Vinci, Florence, Italy. He was the illegitimate son of Ser Piero da Vinci, a lawyer and a peasant woman named Caterina.
Paolo Rossi (2001). The origin of contemporary Science. Blackwell Publishing. ISBN 0631227113.
The article States that for Leonardo, to become an artist, he was trained at the hands of the best master in Italy, Andrea Del Verrochio.
Charles Nicholl (2005). Leonardo da Vinci, The air travel of the Mind. Penguin.