Strahler, Arthur N.
Physical geography
John Wiley & Sons, 1975
 Buku Teks
Trewartha, Glenn T.
Physical elements of geography
McGraw-Hill, 1967
 Buku Teks
De Blij, Harm J.
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.
Exercise in physical geography
McGraw-HIll, 1999
 Buku Teks