by Dr. Hamzah B. Uno, M.Pd $9.00
by Ir. Juhaeni Radi $0.00
by Prof. Dr. Sondang P. Siagian, M.P.A $11.00
by Drs. Firman B. Aji dan Drs. Martin Sirait $9.00
by Ir. Hatta Sunanta, B.Sc., MS $6.00
by Prof. Syekh Abdul Aziz Syawisy $6.00
by Wijanto, dkk $7.00
by Sulistyo-Basuki $13.00