by Robert T. Kiyosaki $7.00
by Syaiful F. Prihadi $13.00
by Drs. H.M. Yacob Ibrahim $11.00
by Sediono M.P Tjondronegoro $18.00
by Ir. Doli Siregar, M.Sc., FRICS., SVC $11.00
by Idi Setiyobroto, dkk $6.00