by Siti Musdah Mulia $6.00
by Ir. Rustam Hakim, M.T., IALI $9.00
by WK $13.00
by Maisar binti Yasin $5.00
by H.C Anderden $7.00
by Ahmad Tohari $6.00
by $5.00
by Prof. H. Muzzayin Arifin $7.00
by Dr. William Hendricks $6.00
by Radiks Purba $13.00
by Prof. Dr. Sudarwan Danim $9.00
by Sulistyowati Irianto $11.00
