MLA

Stillwell, John, S Axler, and K.A Ribet. The Four Pillars of Geometry. Springer New York, 2005.

APA

Stillwell, J., Axler, S., & Ribet, K. (2005). The Four Pillars of Geometry. Springer New York.

Chicago

Stillwell, John, S Axler, and K.A Ribet. The Four Pillars of Geometry. : Springer New York, 2005.