by Ir. Sarjoni Basri $7.00
by Eric A. Nordlinger $11.00
by Khoiron Rosyadi $6.00
by Drs. Amin Widjaja Tunggal, Ak., M.B.A $7.00
by $33.00
by Prof. Dr. H. Abdurrahmat Fathoni, M.Si $7.00