MLA

Peter Schaaf, and Peter Schaaf. Laser Processing of Materials. Springer Berlin Heidelberg, 2010.

APA

Peter Schaaf, P. Schaaf, & Schaaf, P. (2010). Laser Processing of Materials. Springer Berlin Heidelberg.

Chicago

Peter Schaaf, and Peter Schaaf. Laser Processing of Materials. : Springer Berlin Heidelberg, 2010.