Van Riper, Joseph E., author
Man's physical world
McGraw-Hill, 1971
 Buku Teks
Knapp, B.J., author
Earth and man
George Allen and Unwin, 1982
 Buku Teks
Strahler, Arthur N., author
Physical geography
John Wiley & Sons, 1975
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Trewartha, Glenn T., author
Physical elements of geography
McGraw-Hill, 1967
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De Blij, Harm J., author
Physical geography of the global environment
John Wiley & Sons, 1993
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