by Ir. M. Iqbal Hasan $11.00
by Harjawiyata, Frans, OSCO $4.00
by Ign. Wignyasumarta, MSF. $6.00
by Syekh Abdul Qadir Ahmad Atha $6.00
by Evelyn L. Billings, Dr $0.00
by Ernest Mariyanto $3.00
by Dr. Zakiah Daradjat, dkk $7.00