APA (7th ed.) Citation

Stillwell, J. (2005). The four pillars of geometry / John Stillwell. Springer.

Chicago Style (17th ed.) Citation

Stillwell, John. The Four Pillars of Geometry / John Stillwell. New York ; London: Springer, 2005.

MLA (9th ed.) Citation

Stillwell, John. The Four Pillars of Geometry / John Stillwell. Springer, 2005.

Warning: These citations may not always be 100% accurate.