by Laila Juwita $9.00
by Pindi Kisata, S. Kom $6.00
by Prof. Dr. Veithzal Rivai, MBA $18.00
by Gunawan Widjaja $9.00
by Drs. Agus M. Hardjana, M.Sc., Ed $6.00
by Dr. Muhammad bin Abd $5.00