Trewartha, Glenn T.
Elements of geography : physical and cultural
McGraw-Hill, 1967
 Buku Teks SO
Strahler, Arthur N.
Physical geography
John Wiley & Sons, 1975
 Buku Teks
Petersen, James F.
Physical geography
Brooks/Cole Cengage Learning, 2012
 Buku Teks SO
Duckson, Don W.
Exercise in physical geography
McGraw-HIll, 1999
 Buku Teks SO
Blij, Harm J.. de
Physical geography of the global environment
John Wiley & Sons, 1996
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