ISBN 1-59928-844-3. (原始内容存档于2019-12-07). Expert: Da Vinci painted nude Mona Lisa. UPI News. 16 November 2009 [22 March 2011]. (原始内容存档于2018-09-09). Claire
Leonardo da Vinci: anatomical drawings from the Royal Library, Windsor Castle (页面存档备份,存于互联网档案馆), exhibition catalog fully online as PDF from The Metropolitan