APA (7th ed.) Citation

Isaacson, W. (2021). The Code Breaker. Simon & Schuster.

Chicago Style (17th ed.) Citation

Isaacson, Walter. The Code Breaker. London: Simon & Schuster, 2021.

MLA (9th ed.) Citation

Isaacson, Walter. The Code Breaker. Simon & Schuster, 2021.