Posamentier, A. S., & Lehmann, I. (2009). Mathematical amazements and surprises: Fascinating figures and noteworthy numbers. Prometheus Books.
Cita Chicago (17th ed.)Posamentier, Alfred S., i Ingmar Lehmann. Mathematical Amazements and Surprises: Fascinating Figures and Noteworthy Numbers. Amherst, NY: Prometheus Books, 2009.
Cita MLA (8th ed.)Posamentier, Alfred S., i Ingmar Lehmann. Mathematical Amazements and Surprises: Fascinating Figures and Noteworthy Numbers. Prometheus Books, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.