by Dr. Ibrahim Bafadal, M.Pd $6.00
by Drs. Tgk. H.Z.A. Syihab $6.00
by Prof. H.M. Arifin, M.Ed $7.00
by Prof. Subowo, dr. M.Sc., Ph.D $7.00
by $9.00
by C.A. Sanchez $9.00