Kirkman, R. (2002). Skeptical environmentalism: The limits of philosophy and science. Indiana University Press.
Lua i Stíl Chicago (17ú heag.)Kirkman, Robert. Skeptical Environmentalism: The Limits of Philosophy and Science. Bloomington: Indiana University Press, 2002.
Lua MLA (9ú heag.)Kirkman, Robert. Skeptical Environmentalism: The Limits of Philosophy and Science. Indiana University Press, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.