Peters, Gary L.
Population geography: problems, concepts, and prospects
Kendall/Hunt, 1983
 Buku Teks SO
Prospects
Paris : The United Nations Educational
 Majalah, Jurnal, Buletin
Wheeler, James O.
Economic geography
John Wiley & Sons, 1986
 Buku Teks SO
Getis, Arthur
Introduction to geography
McGraw-Hill, 2000
 Buku Teks SO
Moore, W.G.
A dictionary of geography
London : Penguin Books, 1984,
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