APA (7th ed.) Citation

Ball, M., & Wietschel, M. (2009). The hydrogen economy: Opportunities and challenges. Cambridge University Press. https://doi.org/10.1017/CBO9780511635359

Chicago Style (17th ed.) Citation

Ball, Michael, and Martin Wietschel. The Hydrogen Economy: Opportunities and Challenges. Cambridge: Cambridge University Press, 2009. https://doi.org/10.1017/CBO9780511635359.

MLA (9th ed.) Citation

Ball, Michael, and Martin Wietschel. The Hydrogen Economy: Opportunities and Challenges. Cambridge University Press, 2009. https://doi.org/10.1017/CBO9780511635359.