1. Ayling, Stanley (1991), Fox, London, John Murray.
2. Derry, John W. (1990), Politics in the Age of Fox, Pitt and Liverpool, Basingstoke, Macmillan.
3. Duffy, Michael (2000), The Younger Pitt, London, Longman.
4. Ehrman, John (1969), The Younger Pitt: I The Years of Acclaim, London, Constable.
5. Ehrman, John (1983), The Younger Pitt: II The Reluctant Transition, London, Constable.