Barnes, D. G. (1939). George III and William Pitt, 1783-1806: A new interpretation based upon a study of their unpublished correspondence. Stanford University, CA : London: Stanford University Press ; H. Milford, Oxford University Press.

Barnes, Donald Grove. George III and William Pitt, 1783-1806: A New Interpretation Based Upon a Study of Their Unpublished Correspondence. Stanford University, CA : London: Stanford University Press ; H. Milford, Oxford University Press, 1939.

Barnes, Donald Grove. George III and William Pitt, 1783-1806: A New Interpretation Based Upon a Study of Their Unpublished Correspondence. Stanford University, CA : London: Stanford University Press ; H. Milford, Oxford University Press, 1939.