by Revi Devi Paat $7.00
by Ir. Sarjoni Basri $7.00
by Prof. Dr. Syahrin Harahap MA (Ed) $6.00
by Penyunting: J. Kristiadi, T.A. Legowo, N.T. Budi Harjanto $7.00
by Huala Adolf $11.00
by Marihot P. Siahaan $16.00