Donald Attwater - The Penguin Dictionary of Saints, Penguin Books (1965)
Luciano Berti - Florence, the City and its Art, Becocci Editore (1979)
Luciano Berti - The Uffizi, Becocci Editore (1971)
Sarah Brown - Stained Glass, an Illustrated History, Bracken Books (1990) ISBN 1-85891-157-5
T.Francis Bumpus - The Cathedrals and Churches of Belgium, T.Werner Laurie Ltd (1928)
P.and C.Cannon Brooks - Baroque Churches, Paul Hamlyn (1969)
Enzo Carli - Sienese Painting, Summerfield Press (1983) ISBN 0-584-50002-5
Andre Chastel - The Art of the Italian Renaissance, Alpine Fine Arts Collection ISBN 0-88168-139-3
Kenneth Clark, David Finn - The Florence Baptistery Doors, Thames and Hudson (1980)
Sarel Eimerl - The World of Giotto, Time-Life Books, Amsterdam (1967) ISBN 0-900658-15-0
Mgr. Giovanni Foffani - Padua- Baptistery of the Cathedral, Edizioni G Deganello (1988)
Andre Grabar - The Beginnings of Christian Art, Thames and Hudson (1966)
Howard Hibbard - Masterpieces of Western Sculpture, (1977)
Rene Huyghe, editor - Larousse Encyclopedia of Byzantine and Medieval Art, Paul Hamlyn (1963)
Simon Jenkins - England's Thousand Best Churches, Allen Lane, Penguin Press (1999) ISBN 0-713-99281-6
Andrew Martindale - The Rise of the Artist in the Middle Ages and Early Renaissance, Thames and Hudson (1972) ISBN 0-500-56006-4
Emile Male, The Gothic Image, Religious Art in France of the Thirteen Century, English trans of 3rd edn of 1913, Collins, London (and many other editions)
