by Dr. Ronald Hutapea, SKM, Ph.D $6.00
by dr. Titus S. Pusponegoro, Prof. dr. Hans E. M. $5.00
by Andang Gunawan $12.00
by Nursalam $12.00
by Hamilah Djoeana K., Fajar H. Nasution & Bambang S. Trenggono $6.00
by Tarwoto $9.00