by Prof. Dr. Veithzal Rivai $12.00
by Ali Shariati $6.00
by Drs. S. Ansory Al-Mansur $6.00
by Yuke Ardiati $7.00
by Marihot. P. Siahaan, S.E. $16.00
by Drs. Arbi Sanit $7.00