by Drs. Amin Widjaja Tunggal, Ak., M.B.A $6.00
by S.R. Parker, dkk $9.00
by Vincent Gaspersz $7.00
by Kasiyanto Kasemin $7.00
by Prof. J. Suprapto, M.A. APU $9.00
by Doni Istyanto Hari $2.40