1Bate,Jonathan. The Song of the Earth, Harvard University of Press, 2000.
2Donald Worster, Nature's Economy : A History of Ecological Ideas, 2nd, Cambridge University Press,pp. 27, 356.
3Cheryll Glotfelty and Harold Fromm, eds: The Ecocriticism Reader: Landmarks in Literary Ecology, The University of Georgia Press, 1996 pp, 114-115.
4Buell,Lawrence, Writing for an Endangered World: literature, culture, and Environment in the U, S and Beyond, The Belknap Press of Harvard of University, 2001.
5Buell, Lawrence. The Environmental Imagination: Thoreau,Nature Writing,and the Formation of American Culture, Harvard University Press, 1995.
6Bate,Jonathan, The Dream of the Earth, Harvard University of Press,2000.
