APA (7th ed.) Citation

Tompkins, S. R. (1981). The secret war, 1914-1918.

Chicago Style (17th ed.) Citation

Tompkins, Stuart Ramsay. The Secret War, 1914-1918. 1981.

MLA (9th ed.) Citation

Tompkins, Stuart Ramsay. The Secret War, 1914-1918. 1981.

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