by Prof. Dr. Sondang P. Siagian, M.P.A $11.00
by Agusmantoro $7.00
by Drs. H.M. Sudar Siandes, MM $7.00
by Pipiet Senja $11.00
by Drs. Rudy T. Erwin, S.H $9.00
by Prof. Dr. A. Syafii Ma'arif $5.00