by Ir. M. Lies Suprapti $6.00
by WK $12.00
by WK $16.00
by Tangoro, Dwi dkk $6.00
by $12.00
by Harry Simons $12.00
by $4.00
by WK $11.00
by Prof. Hembing Wijayakusuma $7.00
by Hermawan Kartajaya & Yuswohady $11.00