by Prof. Dr. dr. H. Dadang Hawari, Psikiater $7.00
by Leden Marpaung, S.H. $11.00
by Drs. Amin Widjaja Tunggal, Ak., M.B.A $7.00
by Leden Marpaung, S.H. $12.00
by Lipschutz $12.00
by Dr. C. Groenen, OFM. $9.00