by M. Aziz Toyibin dan A. Kosasih Djahiri $12.00
by Ir. Rindit Pembayun, M.P. $6.00
by Victor Situmorang, S.H $6.00
by Prof. Abdur Rahman I Do'I, Ph.D $6.00
by WK $16.00
by Thabrani, Seno Adjie $9.00