De Blij, Harm J.
Physical geography of the global environment
John Wiley & Sons, 1996
 Buku Referensi
Strahler, Alan H.
Physical geography : science and systems of the human environment
John Wiley & Sons, 1997
 Buku Teks SO
Marsh, William M.
Physical geography : great systems and global environments
Cambridge University Press, 2013
 Buku Teks SO
Strahler, Arthur N.
Physical geography
John Wiley & Sons, 1975
 Buku Teks
Duckson, Don W.
Exercise in physical geography
McGraw-HIll, 1999
 Buku Teks