APA (7th ed.) Citation

Ketton-Cremer, R. W. (1964). Horace Walpole: A biography (3. ed.). Methuen.

Chicago Style (17th ed.) Citation

Ketton-Cremer, Robert W. Horace Walpole: A Biography. 3. ed. London: Methuen, 1964.

MLA (9th ed.) Citation

Ketton-Cremer, Robert W. Horace Walpole: A Biography. 3. ed. Methuen, 1964.