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Buku Teks
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Buku Referensi
Jurnal Kajian Wilayah Eropa Vol. 4 No. 1 2008: 81-94, 2008
Artikel Jurnal
Samsul Hilal, author
Universitas Indonesia, 2013
UI - Tesis (Membership)
Mahon, Harold P., author
Prentice-Hall, 1983.
Buku Teks