Mun Hak Dong Ne, 2004
Buku Teks
Rangkuti, Bahrum, author
Kedutaan Pakistan, [date of publication not identified]
Buku Teks
Dahl, Roald
Penguin Books, 1984
Buku Teks
Ha, Tae Hung, author
Yonsei University Press, 1975
Buku Teks
Ha, Tae Hung, author
Yonsei University Press, 1986
Buku Teks