by $7.00
by Prof. Dr. Oemar Hamalik $9.00
by Richard G. Lipsey & Peter O. Steiner $16.00
by Nurudin $9.00
by Prof. Dr. Husaini Usman, M.Pd dan R. Purnomo Setiady Akbar, S.Pd., M.Pd $6.00
by Dr. Hj. Zaitunah Subhan $7.00
by Agung Susanto, SH. $6.00
by Drs. Amin Widjaja Tunggal, Ak., M.B.A $6.00
by Dr. Machasin MA $6.00
by Aziz Alimul $9.00
by Aziz Alimul $7.00
by Marry Winata $7.00