Gardner, J., & Giotto, 1. (2011). Giotto and his publics: Three paradigms of patronage. Harvard University Press.
Chicago-referens (17:e uppl.)Gardner, Julian, och 1266?-1337 Giotto. Giotto and His Publics: Three Paradigms of Patronage. Cambridge, Mass.: Harvard University Press, 2011.
MLA-referens (9:e uppl.)Gardner, Julian, och 1266?-1337 Giotto. Giotto and His Publics: Three Paradigms of Patronage. Harvard University Press, 2011.
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