by Ackley, Gardner $13.00
by Ketut Rindjin $7.00
by M. Aleq Sander, S.Dr $22.00
by Ashadi Siregar & I Made Suarjana $6.00
by Drs. Amin Widjaja Tunggal, Ak., M.B.A $11.00
by Jamrin Abubakar $15.00