Não informado. (1973). American Journal of Political Science. Midwest Political Science Association.
Chicago-referens (17:e uppl.)Não informado. American Journal of Political Science. Austin, Tex: Midwest Political Science Association, 1973.
MLA-referens (8:e uppl.)Não informado. American Journal of Political Science. Midwest Political Science Association, 1973.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.