by Drs. Burhanuddin Salam $9.00
by Yayasan Perspektif Baru $18.00
by Dr. Abdul Rahman Abdul Khalid $6.00
by Sofyan Syafri Harahap $13.00
by Dr. Said Kelana & Dr. Chandra W $12.00
by Syaiful F. Prihadi $11.00
by Tarwoto $9.00