WALLACE, R. (1975). The world of Leonardo 1452-1519. Time-Life Books.
Lua i Stíl Chicago (17ú heag.)WALLACE, Robert. The World of Leonardo 1452-1519. Nederland: Time-Life Books, 1975.
Lua MLA (9ú heag.)WALLACE, Robert. The World of Leonardo 1452-1519. Time-Life Books, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.