APA (7th ed.) Citation

Posamentier, A. S., & Lehmann, I. (2004). [Pi]: A biography of the world's most mysterious number. Prometheus Books.

Chicago Style (17th ed.) Citation

Posamentier, Alfred S., and Ingmar Lehmann. [Pi]: A Biography of the World's Most Mysterious Number. Amherst, N.Y.: Prometheus Books, 2004.

MLA (9th ed.) Citation

Posamentier, Alfred S., and Ingmar Lehmann. [Pi]: A Biography of the World's Most Mysterious Number. Prometheus Books, 2004.