Trewartha, Glenn T., author
Physical elements of geography
McGraw-Hill, 1967
 Buku Teks
De Blij, Harm J., author
Physical geography of the global environment
John Wiley & Sons, 1993
 Buku Teks
Fundamentals of physical geography
oleh Glenn T. Trewartha [and others]
McGraw-Hill, 1977
 Buku Teks
Duckson, Don W., author
Exercise in physical geography
McGraw-HIll, 1999
 Buku Teks
Strahler, Arthur N., author
Modern physical geography
John Wiley & Sons, 1983
 Buku Teks
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