Gon, Tae-son, author
Chang Jak iwa BT pyeong Sa, 1999
Buku Teks
Martin, Jacques
Casterman, 2000
Buku Teks
Lembaga studi dan Advokasi Masyarakat (ELSAM), 2000
Buku Teks
Goodman-Stephens, Bryan, author
Arnold-Wheaton, 1987
Buku Teks
Goodman-Stephens, Bryan, author
E.J. Arnold, 1987
Buku Teks