APA Citation

Gingrich, N., & Maple, T. (2007). A contract with the Earth. Baltimore: Johns Hopkins University Press.

Chicago Style Citation

Gingrich, Newt., and Terry Maple. A Contract With the Earth. Baltimore: Johns Hopkins University Press, 2007.

MLA Citation

Gingrich, Newt., and Terry Maple. A Contract With the Earth. Baltimore: Johns Hopkins University Press, 2007.

Warning: These citations may not always be 100% accurate.