by W. James Popham $7.00
by Ir. Suharto $9.00
by Drs. Soemarso, S.R $7.00
by Prof. DR. Taliziduhu Ndraha $13.00
by Prof. Dr. H.A.R. Tilaar, MSc.Ed $11.00
by H. Abu Daud Busroh $9.00