by Anwar, Moh. Arsjad, dkk $9.00
by Sutanto $5.00
by Nasution, Harun $5.00
by Dr. Ir. Akhmad Fauzi, M.Sc. & Dr. Dra. Suzy Anna, M.Si $12.00
by Koentjaraningrat $6.00
by Swasono, Sri-Edi $7.00