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Communication Books, 2007
Buku Referensi
Lee, Hui-ja, author
Han Kook Munhwasa, 2006
Buku Referensi
Lee, Ki-mun, author
Seoul Doosan Dong a, 2003
Buku Referensi
Nam, Ki-sim, author
Topchulpansa, 2010
Buku Teks
Lee, Jin-ho, author
Pagijong Press, 2009
Buku Teks