by Drs. O.P. Simorangkir., dkk $11.00
by Ir. Sujamto $7.00
by - $6.00
by Dr. Paulus Effendie Lotulung, S.H. $5.00
by Allan B. Muntjoy $9.00
by Drs. Nanang Gojali, M.Ag $7.00