by Dr. K.H. Didin Hafidhuddin, M.Sc dan Hendri Tanjung, S.Si., M.M. $9.00
by Karyawan Perangin angin $6.00
by Ir. Hieronymus Budi Santoso $5.00
by Fuad Kauma $7.00
by $4.00
by Nurul F. Huda $6.00