by Radiks Purba $13.00
by Bilson Simamora $11.00
by Silih Agung Wasesa $16.00
by Redaksi (Penghimpun) $11.00
by - $9.00
by Drs. Ec. Suyadi Prawirosentono, M.B.A $7.00
by Adler, Hans A $6.00
by Dr. Zakiah Daradjat, dkk $9.00
by $6.00
by $7.00
by Lipschutz $13.00
by R. Soeroso, S.H. $9.00