Media for our time : an anthology
edited by Dennis DeNitto
Holt, Rinehart and Winston, 1971
 Buku Teks SO
Haggett, Peter
Geography: a global synthesis
Prentice-Hall, 2001
 Buku Teks
Blij, Harm J.. de
Physical geography of the global environment
John Wiley & Sons, 1996
 Buku Referensi
Blij, Harm J.. de
Physical geography of the global environment
John Wiley & Sons, 1993
 Buku Teks SO
Global change and challenge : geography for the 1990s
edited by Robert Bennet and Robert Estall
Routledge, 1991
 Buku Teks SO