Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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