Korea Foundation, [date of publication not identified]
Buku Referensi
Koehler, Robert, author
Seoul Selection, 2009
Buku Teks
London : Pancy Lund Humpries
Majalah, Jurnal, Buletin
New Haven : East Rock Institute
Majalah, Jurnal, Buletin
Lee Sung-Nyong
Seoul National University, 1970
Buku Teks