MLA

Wolfgang Demtröder, and Wolfgang Demtröder. Laser Spectroscopy 1. Springer Berlin Heidelberg, 2014.

APA

Wolfgang Demtröder, W. Demtröder, & Demtröder, W. (2014). Laser Spectroscopy 1. Springer Berlin Heidelberg.

Chicago

Wolfgang Demtröder, and Wolfgang Demtröder. Laser Spectroscopy 1. : Springer Berlin Heidelberg, 2014.