by Drs. Firman B. Aji dan Drs. Martin Sirait $9.00
by Leech, Geoffrey $7.00
by Suhardjo $6.00
by Drs. A. Hasymi Ali $11.00
by Prof. Dr. Mahmud Syaltut $11.00
by Prof. Drs. Piet A. Sahertian $7.00