Osgood, Cornelius
The Koreans and Their culture
Charles E. Juttle, 1951
 Buku Teks SO
Osgood, Cornelius
Koreans and their culture
Ronald Press, 1951
 Buku Teks SO
Cook, Guy W.D.
Discourse
Oxford University Press, 1993
 Buku Teks SO
Discourse
 Buku Teks
Who is the ancestor of the koreans?
 Artikel Jurnal