Gingrich, N., & Maple, T. L. (2007). A contract with the Earth. Johns Hopkins University Press.
Chicago Style (17th ed.) CitationGingrich, Newt, and Terry L. Maple. A Contract with the Earth. Baltimore: Johns Hopkins University Press, 2007.
MLA (9th ed.) CitationGingrich, Newt, and Terry L. Maple. A Contract with the Earth. Johns Hopkins University Press, 2007.
Warning: These citations may not always be 100% accurate.