by Pandji Anoraga, S.E, M.M $9.00
by Ahmad Azma Dz $6.73
by Prof. Dr. Sondang P. Siagian, M.P.A $7.00
by $13.00
by Bambang Dwiloka & Rati Riana $9.00
by Suhema, S.Pd $7.00