by Dr. Herman Darmawi $7.00
by Drs. Abas Kartadinata $11.00
by M. Amir $6.00
by Edi Herman $20.00
by Arief, Sritua dan Adi Sasono $5.00
by Kerry Patterson, Joseph Grenny, Ron McMillan, Al Switzler $12.00
by $7.00