De Blij, Harm J.
Physical geography of the global environment
John Wiley & Sons, 1993
Buku Teks
De Blij, Harm J.
Physical geography of the global environment
John Wiley & Sons, 1996
Buku Referensi
Hidore, John J.
Physical geography : earth systems
Scott, Foresman, 1974
Buku Teks
Strahler, Alan H.
Physical geography : science and systems of the human environment
John Wiley & Sons, 1997
Buku Teks
Strahler, Arthur N.
Physical geography
John Wiley & Sons, 1975
Buku Teks