by Dr. Ir. Supli Effendi $7.00
by Rudiger Dombusch $12.00
by Ir. Endar Sugiarto, B.A $6.00
by Richard Denny $5.00
by Hermawan Kartajaya $16.00
by Ir. Moehar Daniel, M.S $7.00
by Drs. Suyadi Prawirosentono, MBA $7.00