Introduction readings in geographic information systems
edited by Donna J. Peuquet
Taylor & Francis, 1990
 Buku Teks SO
Hidore, John J.
Physical geography : earth systems
Scott, Foresman, 1974
 Buku Teks
Marsh, William M.
Environmental geography : science, land use, and earth systems
John Wiley & Sons, 1996
 Buku Teks
Marsh, William M.
Physical geography : great systems and global environments
Cambridge University Press, 2013
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Strahler, Alan H.
Physical geography : science and systems of the human environment
John Wiley & Sons, 1997
 Buku Teks SO