by Prof. Dr. Husaini Usman, M.Pd & R. Purnomo Setiady Akbar, S.Pd., M.Pd $11.00
by $7.00
by Dr. H. Abuddin Nata, MA $7.00
by Prof. Dr. Prijono Tjiptoherjanto $6.00
by Helbert A. Simon $13.00
by $6.00
by Drs. A.W. Widjaja $6.00
by Drs. Amin Wijaja Tunggal, M.B.A $6.00
by Disney $6.00
by Marie Duval, e.a. $6.00
by Dr. Henry Cloud $11.00