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Sumaksae, 2005
Buku Teks
Choe, Hyong Chol, author
Hyumonisutu, 2007
Buku Teks
Song, Ho Jeong
Seoul : Ung Jin Junior, 2007
Buku Teks
Jang, Yong Jun, author
Bookmentor, 2008
Buku Teks
Guksa Phyeon Chan Wiwanhwe, 1981
Buku Referensi