Marsh, W. M. (2002). Environmental geography: science, land use, and earth: Systems. Wiley.
Cita Chicago (17th ed.)Marsh, William M. Environmental Geography: Science, Land Use, and Earth: Systems. New York: Wiley, 2002.
Cita MLA (9th ed.)Marsh, William M. Environmental Geography: Science, Land Use, and Earth: Systems. Wiley, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.