by Dr. Hamzah B. Uno, M.Pd $9.00
by Sudarto $6.00
by Drs. S. Margono $9.00
by Anggorodi, R $6.00
by Kunio, Yoshihara $6.00
by Anwar, Rosihan H. $6.00
by Drs. Save M. Dagun $7.00
by Aziz Alimul $9.00
by Prof. dr. Hadiarto Mangunnegara, dr. Dianiati $11.00