by WK $12.00
by WK $11.00
by Cahyo Wahyudi dkk $9.00
by Ir. Rindit Pembayun, M.P. $6.00
by Dr. Hamzah B. Uno, M.Pd $9.00
by Drs. H. Hamdan Aini $9.00
by Muhammad Abed Al-Jabiri $7.00
by $9.00
by Abdul Aziz al-Badri $5.00
by Eddy Purnomo $6.00