Chertow, M. R., & Esty, D. C. (1997). Thinking ecologically: The next generation of environmental policy. Yale University Press.

Chertow, Marian R., and Daniel C. Esty. Thinking Ecologically: The Next Generation of Environmental Policy. New Haven: Yale University Press, 1997.

Chertow, Marian R., and Daniel C. Esty. Thinking Ecologically: The Next Generation of Environmental Policy. Yale University Press, 1997.