by Gunawan Widjaja, A. Yani $9.00
by Bambang Waluyo $6.00
by Taufik H. Simatupang $5.00
by Prof. Mr. O.K. Brhan (diterjemahkan oleh: Linus Doludjawa) $9.00
by Eddy Djunaedi Karnasudirdja $12.00
by $7.00
by Drs. Daryanto $7.00
by Ir. Ari Wijayani Purwanto $9.00
by Bambang Agus Murtidjo $6.00
by Drs. Al. Amin Susanto $4.00
by - $9.00
by Aziz Alimul $11.00