APA (7th ed.) Citation

Purcell, J. F. (1963). The best-kept secret: The story of the atomic bomb. Vanguard Press.

Chicago Style (17th ed.) Citation

Purcell, John Francis. The Best-kept Secret: The Story of the Atomic Bomb. New York: Vanguard Press, 1963.

MLA (9th ed.) Citation

Purcell, John Francis. The Best-kept Secret: The Story of the Atomic Bomb. Vanguard Press, 1963.