by J.P. Vaswani $7.00
by Eddy Purnomo $6.00
by Djoehana Setyamidjaja, M.Ed $7.00
by H. Rahmat Rukmana $6.00
by Drs. Muhsin M.K. S.Ag, M.Sc $6.00
by Drs. Agus M. Hardjana, M.Sc., Ed $6.00