by H. A. Aziz Salim Basyarahil $5.00
by Muhammad Ahmad Asyur $5.00
by Nabil Hamid Al-Mu\'az $11.00
by Karwan A. Salikin $7.00
by Ir. Ari Wijayani Purwanto $0.00
by Dr. Ir. Muhammad Rasyaf, MS $7.00