by Georgia Byng $9.00
by Tim Creative Library $14.00
by Adnan Hasan Baharits $5.00
by Ade S $5.00
by Drs. Sudarsono, S.H., M.Si $7.00
by Marga T $6.00
by Dr. Ir. Akhmad Fauzi, M.Sc. & Dr. Dra. Suzy Anna, M.Si $12.00