The Gothic cathedral : origins of Gothic architecture & the medieval concept of order / Otto von Simson. - Simson, Otto von, 1912-1993. (OLS)http://pul/name/51907 (Princeton University Press, 1974)
Contiene indici.
Bibliografia in appendice.

Actual ethics / James R. Otteson. - Otteson, James R. (OLS)http://pul/name/67624 (Cambridge University Press, 2006)
Include riferimenti bibliografici.