Yusuf Enoch
Bumi Aksara, 1992
Buku Teks
Mohammad Sjafei
Centre for Strategic and International Studies, 1979
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Hasbullah
RajaGrafindo Persada, 2012
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Manik, Wagiman
Universitas Dharmawangsa, 2016
Artikel Jurnal
tim penyusun, Wens Tanlain [and others]
Gramedia, 1992
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