Cowie, Leonard W., and Leonard Woolfson. Years of Nationalism: European History 1815-1890. Edward Arnold, 1985. 183-184
Cowie, Leonard W., and Leonard Woolfson. Years of Nationalism: European History 1815-1890. Edward Arnold, 1985. 189
Cowie, Leonard W., and Leonard Woolfson. Years of Nationalism: European History 1815-1890. Edward Arnold, 1985. 267