by Emanuel Gerrit Singgih, Ph.D. $7.00
by Ir. Daisy P. Sriyadi Hendaryono $6.00
by Eddy Kristiyanto, OFM $7.00
by Petrus Suparyanto, FIC $7.00
by Suharso, A.S.P $6.00
by Bambang Agus Murtidjo $6.00