AppletonJ.1975. The experience of landscape. London: John Wiley and Sons.
2.
BerryT.1988. The dream of the earth. San Francisco: Sierra Club Books.
3.
BrookesA.1994. Reading between the lines—outdoor experience as environmental text. Journal of Physical Education, Recreation and Dance, 65(8): 28–33, 39.
4.
CapraF.1983. The turning point: Science, society, and the rising culture. New York: Bantam Books.
5.
CharltonB.1989. The greening of science. New Scientist, 124(1689): 74.
6.
Department of the Interior, Bureau of Land Management. January 1994. Ecosystem management in the BLM: From concept to commitment. Document BLM/SC/GI-94/005+1736. Washington, DC: U.S. Government Printing Office.
7.
FoxK.M.1994. Negotiating in a world of change: Ecofeminist guideposts for leisure scholarship. Journal of Leisure Research, 26(1): 39–56.
8.
HendeeJ.C.RoggenbuckJ.W. August 5, 1984. Wilderness-related education as a factor increasing demand for wilderness. Paper presented at the International Forest Congress Convention held in Quebec City, Quebec.
9.
HorwoodB.1994. The ceremonial elements of non-native cultures. Journal of Experiential Education17(1): 12–15.
10.
LeopoldA.1966. A sand county almanac. New York: Ballantine Books.
11.
LeopoldA.1991. In FladerS. L.CallicottJ. B. (Eds.), The river of the mother of God and other essays by Aldo Leopold. Madison: University of Wisconsin Press.
12.
Living Earth. 1988. ManasXLI(16): 3–4, 8.
13.
ManesC.1988. Philosophy and the environmental task. Environmental Ethics, 10:75–82.
14.
OrrD.W. (1994). Earth in mind: On education, environment, and the human prospect. Washington, DC: Island Press.
15.
SimpsonS.1985. Short-term wilderness experiences and environmental ethics. Journal of Experiential Education, 8(3): 25–28.
16.
SmithT.E.RolandC.C.HavensM.D.HoytJ.A.1992. The theory and practice of challenge education. Dubuque, IA: Kendall/Hunt Publishing Co.
17.
SnyderG. (1990). The practice of the wild. San Francisco: North Point Press.
18.
StringerL.A.McAvoyL.H.1992. The need for something different: Spirituality and wilderness adventure. Journal of Experiential Education, 15(1): 13–20.
19.
ThoreauH.D.1975. Wild apples. In The Selected Works of Thoreau. Boston: Houghton Mifflin.
20.
TuanY.1974. Topophilia. New York: Prentice-Hall.
21.
TuanY.1990. Realism and fantasy in art, history and geography. Annals of the Association of American Geographers, 80(3): 435–446.
22.
United States Department of Agriculture Forest Service. 1994. A national framework: Ecosystem management. Program Aid 1502. Washington, DC: United States Department of Agriculture.
23.
Van MatreS.1990. Earth Education: A new beginning. Warrensville, IL: Institute for Earth Education.
24.
WhiteL.1967. The historical roots of our ecological crisis. Science, 155: 1203–1207.