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Stites, Raymond S. (Januar 1936): «Mona Lisa-Monna Bella». Parnassus (College Art Association via JSTOR) 8 (1): 7–10+22–23. doi:10.2307/771197. JSTOR 771197. og Project, Making of America (1914): The Two "Mona Lisas". The Century: A Popular Quarterly by Making of America Project via Google Books, innskanning fra kopi fra Universitetet i Michigan. s. 525. Og Wilson, Colin (2000): The Mammoth Encyclopedia of the Unsolved. Carroll & Graf via Google Books begrenset forhåndsvisning. ss. 364–366. ISBN 0-7867-0793-3.
Stites, Raymond S. (Januar 1936): «Mona Lisa-Monna Bella». Parnassus (College Art Association via JSTOR) 8 (1): 7–10+22–23. doi:10.2307/771197. JSTOR 771197. og Project, Making of America (1914): The Two "Mona Lisas". The Century: A Popular Quarterly by Making of America Project via Google Books, innskanning fra kopi fra Universitetet i Michigan. s. 525. Og Wilson, Colin (2000): The Mammoth Encyclopedia of the Unsolved. Carroll & Graf via Google Books begrenset forhåndsvisning. ss. 364–366. ISBN 0-7867-0793-3.
Stites, Raymond S. (Januar 1936): «Mona Lisa-Monna Bella». Parnassus (College Art Association via JSTOR) 8 (1): 7–10+22–23. doi:10.2307/771197. JSTOR 771197. og Project, Making of America (1914): The Two "Mona Lisas". The Century: A Popular Quarterly by Making of America Project via Google Books, innskanning fra kopi fra Universitetet i Michigan. s. 525. Og Wilson, Colin (2000): The Mammoth Encyclopedia of the Unsolved. Carroll & Graf via Google Books begrenset forhåndsvisning. ss. 364–366. ISBN 0-7867-0793-3.