(Earth Works Group (U.S. (1989). 50 simple things you can do to save the earth. Earthworks Press.
Chicago Style (17th ed.) Citation(Earth Works Group (U.S. 50 Simple Things You Can Do to Save the Earth. .Berkeley, CA: Earthworks Press, 1989.
MLA (9th ed.) Citation(Earth Works Group (U.S. 50 Simple Things You Can Do to Save the Earth. Earthworks Press, 1989.
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