APA (7th ed.) Citation

Rifkin,Jeremy. (2002). The Hydrogen Economy. Penguin Putnam.

Chicago Style (17th ed.) Citation

Rifkin,Jeremy. The Hydrogen Economy. New York: Penguin Putnam, 2002.

MLA (9th ed.) Citation

Rifkin,Jeremy. The Hydrogen Economy. Penguin Putnam, 2002.

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