by Prijono Tjiptoherijanto, S.E, M.A, Ph.D $7.00
by Bambang Dwiloka & Rati Riana $9.00
by Ir. Sujamto $7.00
by Victor Situmorang, S.H $7.00
by Sagimun MD $12.00
by Prof. DR. Taliziduhu Ndraha $11.00