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Buku Referensi
Seonggyun-gwan Daehakyo Chulpanbu, 2009
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Tongku Lee
Buku Teks
Tongku Lee
Seoul : Hollym Elizabert, 2007
Buku Teks
Jin Suk Bae, author
Sookmyung Institute for Multicultural Studies, 2017
Artikel Jurnal