ISBN 0-691-03528-8*Levey, Michael; "Florence, A Portrait", Jonathan Cape, 1996, ISBN 0-7126-7310-5*Lightbown, R.W.
ISBN 0-691-03528-8* Levey, Michael; "Florence, A Portrait", Jonathan Cape, 1996, ISBN 0-7126-7310-5* Lightbown, R.W.