एपीए उद्धरण

Brown, L. R. (2011). World on the edge: How to prevent environmental and economic collapse. New York: W. W. Norton.

शिकागो स्टाइल उद्धरण

Brown, Lester R. World On the Edge: How to Prevent Environmental and Economic Collapse. New York: W. W. Norton, 2011.

एमएलए उद्धरण

Brown, Lester R. World On the Edge: How to Prevent Environmental and Economic Collapse. New York: W. W. Norton, 2011.