by Drs. Ary H. Gunawan $11.00
by Prof. Dr. H.A.R. Tilaar, MSc.Ed $11.00
by Drs. Abdullah Ali, Drs. Misbandono, dan Ir. Eny Rahma $7.00
by - $12.00
by M. Ali Hasan $7.00
by Prof. Dr. S. Nasution, M.A. $7.00