APA (7th ed.) Citation

Posamentier, A. S., & Lehmann, I. (2007). The (fabulous) Fibonacci numbers. Prometheus Books.

Chicago Style (17th ed.) Citation

Posamentier, Alfred S., and Ingmar Lehmann. The (fabulous) Fibonacci Numbers. Amherst, NY: Prometheus Books, 2007.

MLA (9th ed.) Citation

Posamentier, Alfred S., and Ingmar Lehmann. The (fabulous) Fibonacci Numbers. Prometheus Books, 2007.