Portinarův triptych (Hugo van der Goes): Porovnání verzí

* Margaret L. Koster. "New Documentation for the Portinari Altar-Piece". ''The Burlington Magazine'', vol. 145 no. 1200, March 2003, pp. 164–79.

* M. B. McNamee. "Further Symbolism in the Portinari Altarpiece". ''The Art Bulletin'', vol. 45 no. 2, June 1963, pp. 142–43.

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* Galleria degli Uffizi