Anson, Edward M.
Harcourt Brace Jovanovich, 1985
Buku Teks
edited by Hiroshi Itoh
Cornell University Press, 1973
Buku Teks
Titus, Harold H.
merican Book Company, 1957
Buku Teks
Sin, Myong-ho, author
Goraesil, 2007
Buku Teks
Forsh, Olga
Foreign Languages Publishing House, [date of publication not identified]
Buku Teks