by dr. Muhardi Muhiman, Prof. dr. Arjatmo Tj. $5.00
by Dr. Thohir Luth, M.A $6.00
by Drs. Firman B. Aji dan Drs. Martin Sirait $9.00
by Rayner Hardjono $7.00
by Rudiger Dombusch $12.00
by Muh. Husni Falah $9.00