by Prof. Dr. H. Abdurrahmat Fathoni, M.Si $7.00
by Prof. Dr. Husaini Usman, M.Pd & R. Purnomo Setiady Akbar, S.Pd., M.Pd $11.00
by Prof. Dr. Sudarwan Danim $11.00
by Prof. Mr. Notonagoro $9.00
by Drs. Daryanto $11.00
by Dr. Sjarkawi, M.Pd $7.00
by $4.00
by - $7.00