Knapp, B.J.
Earth and man
George Allen and Unwin, 1982
 Buku Teks
Strahler, Arthur N.
Physical geography
John Wiley & Sons, 1975
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Duckson, Don W.
Exercise in physical geography
McGraw-HIll, 1999
 Buku Teks
Strahler, Arthur N.
Lab manual for physical geography
John Wiley & Sons, 2004
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Strahler, Arthur N.
Modern physical geography
John Wiley & Sons, 1983
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