Oxford University Press — From 'La festa di San Giovanni quando fu visitato da Christo nel diserto' by Feo Belcari. [Florence - Bart. dei Libri, c. 1495-]
Sterling and Francine Clark Art Institute — Piero della Francesca, c. 1414-1492. Madonna and Child with Four Angels. Sterling and Francine Clark Art Institute. Williamstown, Massachusetts
The Metropolitan Museum of Art — Kneeling Virgin from a Nativity Group. Central Italian, early XVI century. The Cloisters, The Metropolitan Museum of Art