Press, F. (2004). Understanding earth (4th ed.). W.H. Freeman and Company.
Cita Chicago Style (17a ed.)Press, Frank. Understanding Earth. 4th ed. New York: W.H. Freeman and Company, 2004.
Cita MLA (9a ed.)Press, Frank. Understanding Earth. 4th ed. W.H. Freeman and Company, 2004.
Precaución: Estas citas no son 100% exactas.