Koehler, Robert, author
Seoul Selection, 2009
Buku Teks
written by Koean Cultural and Historical Survey Society ; translated by Jung Ha Yun
Korean, Dolbegae Publishers, 2007
Buku Referensi
I Sengho Jien, author
Dau, 2003
Buku Teks
Choi, Jun-sik, author
Dong Asia, 2006
Buku Teks
Suh, Jai-sik, 1956, author
Hollym International Corp, 2006
Buku Referensi