Craig, G.Y., and E.J. Jones, editors. “Letter to the Earth.” A Geological Miscellany, Princeton University Press, Princeton, New Jersey, 1982, pp. 114–115, www.jstor.org/stable/j.ctt7ztjcc.86. Accessed 26 Oct. 2020.
Letter to the Earth. (1982). In Craig G. & Jones E. (Eds.), A Geological Miscellany (pp. 114-115). Princeton, New Jersey: Princeton University Press. Retrieved October 26, 2020, from http://www.jstor.org/stable/j.ctt7ztjcc.86
"Letter to the Earth." In A Geological Miscellany, edited by Craig G.Y. and Jones E.J., 114-15. Princeton, New Jersey: Princeton University Press, 1982. Accessed October 26, 2020. http://www.jstor.org/stable/j.ctt7ztjcc.86.
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