APA (7 वां संस्करण) प्रशस्ति पत्र
Speth, J. G. (2008). The bridge at the edge of the world: Capitalism, the environment, and crossing from crisis to sustainability. Yale University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Speth, James Gustave. The Bridge at the Edge of the World: Capitalism, the Environment, and Crossing from Crisis to Sustainability. New Haven: Yale University Press, 2008.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Speth, James Gustave. The Bridge at the Edge of the World: Capitalism, the Environment, and Crossing from Crisis to Sustainability. Yale University Press, 2008.
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