Cita APA

Posamentier, A. S., & Lehmann, I. (2006). [Pi]: A biography of the world's most mysterious number. Prometheus Books.

Chicago Edition Citation

Posamentier, Alfred S., i Ingmar Lehmann. [Pi]: A Biography of the World's Most Mysterious Number. Amherst, N.Y.: Prometheus Books, 2006.

Cita MLA

Posamentier, Alfred S., i Ingmar Lehmann. [Pi]: A Biography of the World's Most Mysterious Number. Prometheus Books, 2006.