MLA

Stober, Ingrid, Stober, and Kurt Bucher. Geothermal Energy. Springer Berlin Heidelberg, 2013.

APA

Stober, I., Stober, S., & Bucher, K. (2013). Geothermal Energy. Springer Berlin Heidelberg.

Chicago

Stober, Ingrid, Stober, and Kurt Bucher. Geothermal Energy. : Springer Berlin Heidelberg, 2013.