United States. Committee on Improving the Science and Technology Programs of the National Park Service & ebrary, Inc. (1992). Science and the national parks. National Academy Press.
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Chicago Style (17th ed.) Zitazioa
United States. Committee on Improving the Science and Technology Programs of the National Park Service eta Inc ebrary. Science and the National Parks. Washington, D.C.: National Academy Press, 1992.
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MLA (9th ed.) Zitazioa
United States. Committee on Improving the Science and Technology Programs of the National Park Service eta Inc ebrary. Science and the National Parks. National Academy Press, 1992.
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