Gaya APA

Rifkin, J. (2003). The Hydrogen Economy . New York: Jeremy P. Tarcer/Penguin a member of Penguin Group(USA) Inc. New York.

Gaya MLA

Rifkin, Jeremy. "The Hydrogen Economy". New York: Jeremy P. Tarcer/Penguin a member of Penguin Group(USA) Inc. New York, 2003. Text.