Indonesia National Development Information Office, 1996
Buku Teks
Luca, Cornelius
New York Institute of Finance, 2000
Buku Teks
U.S. National Committrr for Pacific Economic Corporation, 1994
Buku Teks
Nasution, Anwar
Bank Indonesia , 2000
Buku Teks
The Asia Foundation, 1997
Buku Teks