by $4.00
by H. Rahmat Rukmana $5.00
by Dr. Ir. Muhammad Rasyaf, MS $6.00
by Dr. Muhammad Ahmad Asyur $6.00
by Drs. Wishnubroto Widarso $5.00
by Mana'ul Quthan, Terj. Halimuddin, S.H $9.00