by Drs. Soemarso, S.R $16.00
by Prof. Dr. Husaini Usman, M.Pd & R. Purnomo Setiady Akbar, S.Pd., M.Pd $11.00
by Prof. Dr. S. Nasution, M.A. $7.00
by Drs. G. Kartasapoetra, dkk $7.00
by - $12.00
by K. Usman & L.K. Ara $5.00
by Prof. J. Suprapto, M.A. APU $9.00
by Drs. Amin Wijaja Tunggal, M.B.A $11.00