APA-referens (7:e uppl.)
Barker, R. (1997). Political ideas in modern Britain: In and after the twentieth century (2nd ed.). Routledge.
Chicago-referens (17:e uppl.)
Barker, Rodney. Political Ideas in Modern Britain: In and After the Twentieth Century. 2nd ed. London: Routledge, 1997.
MLA-referens (9:e uppl.)
Barker, Rodney. Political Ideas in Modern Britain: In and After the Twentieth Century. 2nd ed. Routledge, 1997.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.