Cirker, H. (1983). Italian master drawings from the Uffizi. Dover Publications.
Lua i Stíl Chicago (17ú heag.)Cirker, Hayward. Italian Master Drawings from the Uffizi. New York: Dover Publications, 1983.
Lua MLA (8ú heag.)Cirker, Hayward. Italian Master Drawings from the Uffizi. Dover Publications, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.