MLA

Hartnig, Christoph, and Christina Roth. Polymer Electrolyte Membrane and Direct Methanol Fuel Cell Technology. Woodhead Publishing, 2012.

APA

Hartnig, C., & Roth, C. (2012). Polymer electrolyte membrane and direct methanol fuel cell technology. Woodhead Publishing.

Chicago

Hartnig, Christoph, and Christina Roth. Polymer Electrolyte Membrane and Direct Methanol Fuel Cell Technology. : Woodhead Publishing, 2012.