एपीए उद्धरण

Roberts, P. (2004). The end of oil: On the edge of a perilous new world. Boston: Houghton Mifflin.

शिकागो स्टाइल उद्धरण

Roberts, Paul. The End of Oil: On the Edge of a Perilous New World. Boston: Houghton Mifflin, 2004.

एमएलए उद्धरण

Roberts, Paul. The End of Oil: On the Edge of a Perilous New World. Boston: Houghton Mifflin, 2004.