by I Gusti Ngurah Agung $9.00
by Ir. M. Iqbal Hasan $12.00
by Dr. Juraid Abdul Latief, M.Hum $7.00
by Prof. Dr. Sondang P. Siagian, M.P.A $11.00
by Dr. Hamzah B. Uno, M.Pd $0.00
by Drs. Ary H. Gunawan $11.00