Go, Yun Gon, author
Wisdom House, 2008
Buku Teks
Lee, Seung Hee, author
Scola, 2009
Buku Teks
Kim, Chun-gi, author
Sigum Sa Puksu, 2009
Buku Teks
Jong, Kyong-a, author
Kilchatgi, 2007
Buku Teks
editor, Abdul Kadir
Economic Research Center, 1988
Buku Teks