Chertow, M. R., & Esty, D. C. (1997). Thinking ecologically: The next generation of environmental policy. Yale University Press.
Lua i Stíl Chicago (17ú heag.)Chertow, Marian R., agus Daniel C. Esty. Thinking Ecologically: The Next Generation of Environmental Policy. New Haven: Yale University Press, 1997.
Lua MLA (8ú heag.)Chertow, Marian R., agus Daniel C. Esty. Thinking Ecologically: The Next Generation of Environmental Policy. Yale University Press, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.