APA (7th ed.) Citation

Sellers, L. (1997). Shot in the tower: The story of the spies executed in the Tower of London during the First World War. Leo Cooper.

Chicago Style (17th ed.) Citation

Sellers, Leonard. Shot in the Tower: The Story of the Spies Executed in the Tower of London During the First World War. London: Leo Cooper, 1997.

MLA (9th ed.) Citation

Sellers, Leonard. Shot in the Tower: The Story of the Spies Executed in the Tower of London During the First World War. Leo Cooper, 1997.