by $6.00
by Dr. Thariq M.As-Suwaidan dan Ir. Faisal Umar Basyarahil $11.00
by Muh. Majdi Marjan $7.00
by Ir. Hieronymus Budi Santoso $5.00
by Sei H. Dt. Tombak Alam $5.00
by Ir. Arif Hartoyo, M. S $5.00
by Arief Sardiman, dkk $11.00