Gardner, J., & Giotto, 1. (2011). Giotto and his publics: Three paradigms of patronage. Harvard University Press.

Gardner, Julian, and 1266?-1337 Giotto. Giotto and His Publics: Three Paradigms of Patronage. Cambridge, Mass.: Harvard University Press, 2011.

Gardner, Julian, and 1266?-1337 Giotto. Giotto and His Publics: Three Paradigms of Patronage. Harvard University Press, 2011.