Vellinga, W.H., author
H.D. Tjeenk Willink, 1979
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Bleichrodt, C.J.G., author
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Pardede, Charles Rio Valentine, author
Sekolah Kajian Stratejik dan Global Universitas Indonesia, 2022
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Nuansa Aulia, 2009
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Manullang, Sabar D. F., author
Universitas Indonesia, 2004
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