MLA

Kleinaltenkamp, Michael, et al. Business Relationship Management and Marketing. Springer Berlin Heidelberg, 2015.

APA

Kleinaltenkamp, M., Geiger, I., Jacob, F., Plinke, W., & Sollner, A. (2015). Business Relationship Management and Marketing. Springer Berlin Heidelberg.

Chicago

Kleinaltenkamp, Michael, Ingmar Geiger, Frank Jacob, Wulff Plinke, and Albrecht Sollner. Business Relationship Management and Marketing. : Springer Berlin Heidelberg, 2015.