by Susmayati, B.A., dkk $6.00
by Prof. Dr. Sondang P. Siagian, M.P.A $11.00
by E. Liliawati, S.H., dkk $6.00
by Soejono, S.H., M.H $9.00
by Frianto Pandja, S.E $11.00
by R. Ibrahim dan Nana Syaodih. S $7.00