I, Jeong U
Segyehwasidae Hanguk gyeong je ui Jiiio
Doseochulphan Hanul, 2008
Buku Teks
Gwan, Gyeong Deok
Hanguk-Asean FTA ui Gyeongjejeok Hyogwae Gwanhan Yeongu / Gwan Gyeong Deok.
Hanguk Haksul Jeongbo, 2007
Buku Teks
Jeong, Gu Hyeon.
Hangukgicopui geulrobeol gyeongyeong
Wisdom House, 2008
Buku Teks
Ryu, Dae Hyun
Kyung je sang sik
Sae ro wun je an, 2008
Buku Teks
Gyongje: gamsu gong byongho=Korean economy
I & Book, 2009
Buku Teks