by Drs. Paulus Hariyono, M.T $9.00
by Helbert A. Simon $13.00
by Prof. Dr. S. Nasution, M.A. $7.00
by Drs. Daryanto $6.00
by Prof. Dr. Ami Muhammad $9.00
by Swasono, Sri-Edi, & Masri Singarimbun (Ed) $7.00
by IWAN YUSWANDI $6.00