Brachirolli. "Notizie e documenti inediti intorno a Pietro Vannucci." Perugia, 1874.
Burckhardt. "Art Guide to Painting in Italy." London, 1879.
Bryan. "Dictionary of Painters." London, 1893.
Berenson, B. "Central Italian Painters." London, 1897.
Broussolle, J. C. "Pèlerinages Ombriens." Paris, 1896.
Cennino Cennini. "Trattato della Pittura." Italian, sixteenth century.
"Cennino Cennini, The Book of the Art of." Translated by Mrs. Herringham. London, 1899.
Crowe and Cavalcaselle. "Renaissance in Italy." London, 1877.
Church, A. H. "Cantor Lectures on Colours." London, 1890.
Eastlake, Sir C. "History of Painting."