MLA

Sharan, Pankaj, Gerald Kaiser, and C Berenstein. Spacetime, Geometry and Gravitation. Birkhäuser Basel, 2009.

APA

Sharan, P., Kaiser, G., & Berenstein, C. (2009). Spacetime, Geometry and Gravitation. Birkhäuser Basel.

Chicago

Sharan, Pankaj, Gerald Kaiser, and C Berenstein. Spacetime, Geometry and Gravitation. : Birkhäuser Basel, 2009.