by Abuddin Nata $7.00
by Prof. Dr. Sondang P. Siagian, M.P.A $9.00
by K. Usman $6.00
by Drs. Syaiful Bahri Djamarah $7.00
by Drs. Surajiyo $9.00
by Drs. H.M. Daryanto $9.00
by Prof. DR. Taliziduhu Ndraha $9.00
by J. Donald Walters $3.00
by Mas Harto $6.00
by Endar Sugiarto & Ir. Kusmayadi $9.00
by Andrias Harefa $7.00
by Theresia Citraningtyas $4.80