by Nyoman S. Pendit $18.00
by G. Kartasapoetra dan R. G. Kartasapoetra, S.H $6.00
by Agus Pambagio $3.84
by Prof. Subowo, dr. M.Sc., Ph.D $9.00
by Norman A. Hart $9.00
by $6.00
by Drs. Husein Umar, S.E., M.M., MBA $13.00