Oberdofer, Don, author
Korea Basic Books, 2001
Buku Teks
Seoul-Somerset Jimoondang Publishing 2000
Buku Teks
Kim, Ri-na, 1942-, author
Hollym International Corp, 2007
Buku Teks
Kim, Sung-woo, author
Hollym, 2007
Buku Teks
Lee, Ki-baik, author
Soul lechokok, 1984
Buku Teks