Israel, Saul
World geography today
Holt, Rinehart and Winston, 1976
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Essentials of world regional geography
by Christopher L. Salter ... [et al.]
Saunders College Publishing, 2000
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James, Preston E.
The wide world: a geography
Macmillan, 1972
 Buku Teks SO
Case studies in world geography : occupance and economy types
by Richard M. Highsmith, Jr.... [et.al.]
Prentice-Hall, 1961
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Spidchenko, K.
Economic geography of the world a popular outline/ K. Spidchenko
Progress , 1972
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