De Blij, Harm J.
John Wiley & Sons, 1995
Buku Referensi
De Blij, Harm J.
John Wiley & Sons, 1995
Buku Teks
Anne Buttimer, David Seamon, editors
Croom Helm, 1980
Buku Teks
Malinowski, Jon C.
McGraw-Hill, 2012
Buku Teks
by Jerome D. Fellmann, Mark D. Bjelland, Arthur Getis, Judith Getis
McGraw-Hill, 2010
Buku Teks