1. A.K. Russell, Liberal Landslide: The General Election of 1906 (Newton Abbot: David and Charles), 1973, pp. 65, 83.
2. M. Pugh, The Making of Modern British Politics: 1867–1945 (Oxford: Blackwell, 2002), p. 102.
3. D. Judd, Radical Joe: A Life of Joseph Chamberlain (Cardiff: University of Wales Press, 1993), p. 242.
4. T.L. Crosby, Joseph Chamberlain: A Most Radical Imperialist (London: I.B. Taurus, 2011), p. 164.
5. P.T. Marsh, Joseph Chamberlain: Entrepreneur in Politics (New Haven: Yale University Press, 1994), p. 563