APA (7th ed.) Citation

Heil, H., & Steinbach, A. (2011). Energie und Fortschritt.

Chicago Style (17th ed.) Citation

Heil, Hubertus, and Armin Steinbach. Energie Und Fortschritt. 2011.

MLA (9th ed.) Citation

Heil, Hubertus, and Armin Steinbach. Energie Und Fortschritt. 2011.

Warning: These citations may not always be 100% accurate.