Legge, James, author
[publisher not identified], [date of publication no identified]
Buku Teks
Kim, Yul-gyu, author
Dosea Chulphan Mory, 1999
Buku Teks
Kudeok Publishing Company, 2006
Buku Referensi
Song, Ki-ho, 1965-, author
Sol, 2007
Buku Teks
Pelanduk Publications, 1996
Buku Teks