Sin, Myong-ho
Goraesil, 2007
Buku Teks
Forsh, Olga
Foreign Languages Publishing House, [date of publication not identified]
Buku Teks
Haddix, Magaret Peterson
SSBFYR, 2015
Buku Teks
Youl Hwa Dang Pub. Co, 1993
Buku Teks
Hung, Sheng
Foreign Language Press, 1955
Buku Teks