7William Rueckert. Literature and Ecology:An Experiment in Ecocriticism[A].Glotfelty, Fromm.eds. The Ecocriticism Reader: Landmarks in Literary Ecolosy[Ml.Athens:The University of Georgia Press, 1996.114.
8Cheryll Glotfelty,Harold Fromm.eds. The Ecocriticism Reader: Landmarks in Literary Ecology[M].Athens: The University of Georgia Press, 1996.11.