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
 Buku Referensi
Trewartha, Glenn T.
Physical elements of geography
McGraw-Hill, 1967
 Buku Teks SO
Blij, Harm J.. de
Physical geography of the global environment
John Wiley & Sons, 1993
 Buku Teks SO