APA (7th ed.) Citation

Löhr, R., & Bell, A. (2007). The chess machine (1st American ed.). Penguin Press.

Chicago Style (17th ed.) Citation

Löhr, Robert, and Anthea Bell. The Chess Machine. 1st American ed. New York: Penguin Press, 2007.

MLA (9th ed.) Citation

Löhr, Robert, and Anthea Bell. The Chess Machine. 1st American ed. Penguin Press, 2007.