by Muzaham, Fauzi $7.00
by Soedjito Tjokrowisastro $12.00
by Syahrin Harahap $9.00
by DR. Andi Hamzah, S.H $12.00
by Notosusanto. Nugroho $6.00
by Prof. Dr. Suharsimi Arikunto $7.00