Moss, Stephen R., author
Prentice-Hall, 2001
Buku Teks
Bostwick, Burdette E.
John Wiley & Sons, 1980
Buku Teks
Stein, Barbara L., author
Neal-Schuman, 1992
Buku Referensi
Ministry of culture and information, 1970
Buku Referensi
Korean Culture and Information Service, 2008
Buku Teks