APA (7th ed.) Citation

Rösing, G., & Keppler, F. (2007). Verfahren zur Herstellung von Biogas: = Method for producing biogas. WIPO.

Chicago Style (17th ed.) Citation

Rösing, Gerhard, and Frank Keppler. Verfahren Zur Herstellung Von Biogas: = Method for Producing Biogas. Geneva: WIPO, 2007.

MLA (9th ed.) Citation

Rösing, Gerhard, and Frank Keppler. Verfahren Zur Herstellung Von Biogas: = Method for Producing Biogas. WIPO, 2007.

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