Essentials of world regional geography
by Christopher L. Salter ... [et al.]
Saunders College Publishing, 2000
 Buku Teks SO
Israel, Saul
World geography today
Holt, Rinehart and Winston, 1976
 Buku Teks SO
James, Preston E.
The wide world: a geography
Macmillan, 1972
 Buku Teks SO
Cole, J.P.
Geography of world affairs
Penguin Books, 1979
 Buku Teks SO
Globalization and diversity: geography of a changing world
by Les Rowntree ... [and others]
Prentice-Hall, 2011
 Buku Teks SO