Cummings, Frederick (October 1974). "The Meaning of Caravaggio's 'Conversion of the Magdalen'". The Burlington Magazine. 116 (859): 562+565+570+572–578+591. JSTOR877817.
Salerno, Luigi (October 1974). "The Art-Historical Implications of the Detroit 'Magdalen'". The Burlington Magazine. 116 (859): 565+570+573+586–591+593. JSTOR877819.
Spezzaferro, Luigi (October 1974). "The Documentary Findings: Ottavio Costa as a Patron of Caravaggio". The Burlington Magazine. 116 (859): 570+579–586+591. JSTOR877818.