MLA

Nackenhorst, Udo, P Wriggers, and Peter Wriggers. Analysis and Simulation of Contact Problems. Springer Berlin Heidelberg, 2006.

APA

Nackenhorst, U., & Wriggers, P., & Wriggers, P. (2006). Analysis and Simulation of Contact Problems. Springer Berlin Heidelberg.

Chicago

Nackenhorst, Udo, P Wriggers, and Peter Wriggers. Analysis and Simulation of Contact Problems. : Springer Berlin Heidelberg, 2006.