by Atok Sugiarto $18.00
by O. Solihin & Iwan Januar $6.00
by - $6.00
by Yasa Boga $12.00
by Prof. DR. Taliziduhu Ndraha $11.00
by Jack Canfield $12.00
by Prof. Dr. Sondang P. Siagian, M.P.A $9.00
by Drs. K.H. Badruddin Hsubky $7.00