by Drs. Zifirdaus Adnan & Dra. I. Zifirdaus $9.00
by - $16.00
by Dr. Hj. Fathul Djannah SH $6.00
by Prof. Dr. Sondang P. Siagian, M.P.A $11.00
by Prof. DR. S.P. Siagian, M.P.A $9.00
by DR. H.K. Martono, S.H., L.L.M $26.00