Beob-Ryun
Jisik Channel, 2012
Buku Teks
Kang, Seong-Ryul, author
Phyeongdanmunhaksa, 2010
Buku Teks
Brandenstein, Wilhelm, author
Gerold, 1950
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Abercrombie, David
Aldine, 1968
Buku Teks
Ladefoged, Peter, author
Blackwell publisher, 2001
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