by Prof. Dr. Sudarwan Danim $9.00
by Dr. Ibrahim Bafadal, M.Pd $6.00
by Prof. Dr. S. Nasution, M.A. $6.00
by A. Malik Fadjar $11.00
by Dr. Sjarkawi, M.Pd $7.00
by Dr. Ahmad Jayadi, M.Pd $7.00
by Dr. H. Hamzah B. Uno, M.Pd $7.00
by Tanenbaum $13.00
by Soeharto R.M., S.H. $9.00
by Leman $9.00
by Andrias Harefa $7.00
by AFIFAH AFRA $8.00