MLA

Frenz, Walter, and Axel Preuße. Yearbook of Sustainable Smart Mining and Energy 2021 : Technical, Economic and Legal Framework. Cham: Springer International Publishing AG, 2022.

APA

Frenz, W., & Preuße, A. (2022). Yearbook of Sustainable Smart Mining and Energy 2021 : Technical, Economic and Legal Framework. Cham: Springer International Publishing AG.

Chicago

Frenz, Walter., and Axel Preuße. Yearbook of Sustainable Smart Mining and Energy 2021 : Technical, Economic and Legal Framework. Cham: Springer International Publishing AG, 2022.