Roberts, P. 1. A. 2. (2004). The end of oil: On the edge of a perilous new world. Houghton Mifflin.
Cita Chicago (17th ed.)Roberts, Paul 1961 August 2-. The End of Oil: On the Edge of a Perilous New World. Boston: Houghton Mifflin, 2004.
Cita MLA (9th ed.)Roberts, Paul 1961 August 2-. The End of Oil: On the Edge of a Perilous New World. Houghton Mifflin, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.