APA (7th ed.) Citation
Rummel, F., & Kappelmeyer, O. (1993). Erdwärme. Geothermal Energy (2.Aufl.). C.F.Müller.
Chicago Style (17th ed.) Citation
Rummel, F., and O. Kappelmeyer. Erdwärme. Geothermal Energy. 2.Aufl. Karlsruhe: C.F.Müller, 1993.
MLA (9th ed.) Citation
Rummel, F., and O. Kappelmeyer. Erdwärme. Geothermal Energy. 2.Aufl. C.F.Müller, 1993.
Warning: These citations may not always be 100% accurate.