MLA

Demtröder, and Wolfgang Demtröder. Laser Spectroscopy 2. Springer Berlin Heidelberg, 2015.

APA

Demtröder, D., & Demtröder, W. (2015). Laser Spectroscopy 2. Springer Berlin Heidelberg.

Chicago

Demtröder, Wolfgang Demtröder, and Wolfgang Demtröder. Laser Spectroscopy 2. : Springer Berlin Heidelberg, 2015.