MLA

Hilgers, and Wilfried Achenbach. The Diesel Engine. Springer Berlin Heidelberg, 2021.

APA

Hilgers, H., & Achenbach, W. (2021). The Diesel Engine. Springer Berlin Heidelberg.

Chicago

Hilgers, and Wilfried Achenbach. The Diesel Engine. : Springer Berlin Heidelberg, 2021.