Editor: A.J. Stockwell, R. Asthon
HMSO, 1995
Buku Teks
Sears, Francis Weston, 1898-1975
Addison-Wesley , 1982
Buku Teks
edited by R.W. Cahn and P. Haasen
North-Holland, 1983
Buku Teks
Myongdo Language Institute, [date of publication not identified]
Buku Teks
Vandesande, Anthony V.
Myongdo Institute, 1967
Buku Teks