Coughlan, R. (1975). The world of Michelangelo, 1475-1564. Time-Life International (Nederland) B.V.
Lua i Stíl Chicago (17ú heag.)Coughlan, Robert. The World of Michelangelo, 1475-1564. Netherland: Time-Life International (Nederland) B.V, 1975.
Lua MLA (9ú heag.)Coughlan, Robert. The World of Michelangelo, 1475-1564. Time-Life International (Nederland) B.V, 1975.
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