APA (7th ed.) Citation

Ketton-Cremer, R. W. (1940). Horace Walpole: A biography. Duckworth.

Chicago Style (17th ed.) Citation

Ketton-Cremer, R. W. Horace Walpole: A Biography. London: Duckworth, 1940.

MLA (8th ed.) Citation

Ketton-Cremer, R. W. Horace Walpole: A Biography. Duckworth, 1940.

Warning: These citations may not always be 100% accurate.