Pyongyang : The Foreign Languages Publishing House
Majalah, Jurnal, Buletin
McCune, George M.
Harvard University Press, 1950
Buku Teks
The Academy of Korean Studies , 2005
Buku Teks
Hogosa, 2009
Buku Referensi
Yi, Son-i, 1967-
Hanguk Munhwasa, 2007
Buku Teks