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Buku Referensi
YBM Si-sa, 2008
Buku Referensi
Shanghai Jiaotong Dexue Chubanshe, 2002
Buku Referensi
Irfan Ugurlu
Istambul, MEB, 2001
Buku Referensi
Suenobu, Mineo
Kobe University of Commerce, 1999
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