by Cik Hasan Bisri $11.00
by Prof. Soetjipto dan Drs. Raflis Kosasi, M.Sc $9.00
by Dr. Farida Rahim, M.Ed $7.00
by M. Abdul Ghoffar, E.M $9.00
by Dr. Hamzah B. Uno, M.Pd $9.00
by Neil F. Gordon MD $7.00