by AAK (Aksi Agraris Kanisius) $6.00
by Suwarno $7.00
by Prof. Mr. Roeslan Saleh $7.00
by Prof. Dr. Suharsimi Arikunto $11.00
by Drs. Agus Sujanto $9.00
by Ir. C. Totok Sutrisno $6.00