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Olson, Roberta J. M. (1993). «Lost and Partially Found: The Tondo, a Significant Florentine Art Form, in Documents of the Renaissance». Artibus et Historiae. 14 (27): 31–65. JSTOR1483444. doi:10.2307/1483444
Easton, Malcolm (1969). «The Taddei Tondo: A Frightened Jesus?». Journal of the Warburg and Courtauld Institutes. 32: 391–393. JSTOR750622. doi:10.2307/750622
Smart, Alastair (1967). «Michelangelo: the Taddeo Taddei 'Madonna' and the National Gallery 'Entombment'». Journal of the Royal Society of Arts. 115 (5135): 835–862. JSTOR41371690
Olson, Roberta J. M. (1993). «Lost and Partially Found: The Tondo, a Significant Florentine Art Form, in Documents of the Renaissance». Artibus et Historiae. 14 (27): 31–65. JSTOR1483444. doi:10.2307/1483444