Stone, I., & Stone, I. (1974). Michelangelo: Irving Stone. Editio-Service.
Lua i Stíl Chicago (17ú heag.)Stone, Irving, agus Irving Stone. Michelangelo: Irving Stone. Genf: Editio-Service, 1974.
Lua MLA (8ú heag.)Stone, Irving, agus Irving Stone. Michelangelo: Irving Stone. Editio-Service, 1974.
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