I, Jeong U
Segyehwasidae Hanguk gyeong je ui Jiiio
Doseochulphan Hanul, 2008
Buku Teks
Hong, Ha Sang
Jusik haesa Daehan minjuk Ceo Bak Jung Hui / Hong, Ha Sang
Gukilmidieo, 2005
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Lee, Jae Gi
Hyeondae hanguk mooyeokron
Chongmok, 2007
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Jeong, Gu Hyeon.
Hangukgicopui geulrobeol gyeongyeong
Wisdom House, 2008
Buku Teks
Gyongje: gamsu gong byongho=Korean economy
I & Book, 2009
Buku Teks