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Buku Teks
Kim, Ku-Hee, author
(Ju) Bi Ryong So, 2002
Buku Teks
Hu, T.C., author
Addison-Wesley, 1982
Buku Teks
Hong, Sung Kuk, author
Econ book, 2008
Buku Teks
Hall, Parnell, author
Xiao Zhi Dang Wenhua, 1995
Buku Teks