Ceremonial institutions : being part IV. of the Principles of sociology : (the first portion of vol. II.) / by Herbert Spencer. - Spencer, Herbert, 1820-1903. (OLS)http://pul/name/9956 (Williams and Norgate, 1879)
Bibliografia: p. [226]-237.

Trovare rifugio : riscoprire dentro se stessi la pace del monastero / Christopher Jamison ; traduzione di Chandra Livia Candiani . - Jamison, Christopher. (OLS)http://pul/name/107960; Candiani, Chandra Livia. (OLS)http://pul/name/107961 (Mondadori, 2008)