Não informado. (1980). History of Political Thought. Imprint Academic.
Chicago-referens (17:e uppl.)Não informado. History of Political Thought. Exeter, Inglaterra: Imprint Academic, 1980.
MLA-referens (8:e uppl.)Não informado. History of Political Thought. Imprint Academic, 1980.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.