MLA

Sheffield, John W.; Sheffield, Cigdem, John W Sheffield, and Çigdem Sheffield. Assessment of Hydrogen Energy for Sustainable Development. Springer Netherlands, 2007.

APA

Sheffield, C., Sheffield, J. W, & Sheffield, Ç. (2007). Assessment of Hydrogen Energy for Sustainable Development. Springer Netherlands.

Chicago

Sheffield, John W.; Sheffield, Cigdem, John W Sheffield, and Çigdem Sheffield. Assessment of Hydrogen Energy for Sustainable Development. : Springer Netherlands, 2007.