by Thompson Ngoen $12.00
by WK $13.00
by Tanenbaum $13.00
by Aziz Alimul $11.00
by WK $11.00
by Prof. DR. M. Solly Lubis, SH. $6.00
by Etzioni, Amitai $6.00
by Prof. Soetjipto dan Drs. Raflis Kosasi, M.Sc $9.00
by Prof. Dr. H. Ismail Muhammad Syah, S.H. dkk $11.00
by $6.00
by Aziz Alimul $9.00