Lee, Sang-oak
Do Wook Choi, 2008
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Kim, Hye Nam
Maeil Kyongje Sinmunsa , 2006
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Korean Institute for Strategic Studies
Omunhaksa, 2006
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Lee, Hui-sung, 1896-1989
Shingumunhwasa, 2010
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Grant, Bruce, 1925-
Hollym, 1982
Buku Teks