MLA

Hoffmann, Alex C, and Louis E Stein. Gas Cyclones and Swirl Tubes. Springer Berlin Heidelberg, 2008.

APA

Hoffmann, A. C, & Stein, L. E. (2008). Gas Cyclones and Swirl Tubes. Springer Berlin Heidelberg.

Chicago

Hoffmann, Alex C., and Louis E Stein. Gas Cyclones and Swirl Tubes. : Springer Berlin Heidelberg, 2008.