MLA

Bär, Christian, Joachim Lohkamp, and Matthias Schwarz. Global Differential Geometry. Springer Berlin Heidelberg, 2012.

APA

Bär, C., Lohkamp, J., & Schwarz, M. (2012). Global Differential Geometry. Springer Berlin Heidelberg.

Chicago

Bär, Christian, Joachim Lohkamp, and Matthias Schwarz. Global Differential Geometry. : Springer Berlin Heidelberg, 2012.