Tolong jelaskan mengenai Catatan dari Patung penunggang kuda Gattamelata

Draper, James David. "Donatello (ca. 1386–1466)". In Heilbrunn Timeline of Art History. New York: The Metropolitan Museum of Art, 2000.  (October 2002)

"The Early Renaissance: 1400–1494." Web. 28 February 2010.

Kleiner, Fred S. Gardner's Art Through the Ages A Global History, Volume II. Belmont: Wadsworth, 2008. Print.

Sullivan, Mary Ann. "Equestrian monument of Erasmo da Narni, called Gattamelata." 2006. Web. 28 February 2010.