Quelques aspects du développement des règles de la neutralité / par Thorvald Boye. - Boye, Thorvald, 1871- (OLS)http://pul/name/60115 (s. n.], 1938)
Bibliografia in nota.

Philosophical aspect of communication : a study in social philosophy / John Joseph O'Connor. - O'Connor, John Joseph, 1932- (OLS)http://pul/name/107096; Catholic University of America. Tesi. (OLS)http://pul/name/106692 (The Catholic University of America, 1953)
Estratto da Tesi : The Catholic University of America. Philosophical Studies. 1953.
Bibliografia in nota a piè pagina.