(2009). Biogas: produce locally, profit regionally, win internationally: 18th Annual Conference of German Biogas Association with comprehensive biogas exhibition ; February 3rd to February 5th 2009, Exhibition Center Hanover. Fachverband Biogas e.V.
Chicago-Zitierstil (17. Ausg.)Biogas: Produce Locally, Profit Regionally, Win Internationally: 18th Annual Conference of German Biogas Association with Comprehensive Biogas Exhibition ; February 3rd to February 5th 2009, Exhibition Center Hanover. Freising: Fachverband Biogas e.V, 2009.
MLA-Zitierstil (9. Ausg.)Biogas: Produce Locally, Profit Regionally, Win Internationally: 18th Annual Conference of German Biogas Association with Comprehensive Biogas Exhibition ; February 3rd to February 5th 2009, Exhibition Center Hanover. Fachverband Biogas e.V, 2009.