by Dra. Ahmad Rohani H.M., M.Pd $9.00
by Tonny Greener $7.00
by Prof. Dr. Sondang P. Siagian, M.P.A $7.00
by G. Kartasapoetra dan Dra. Hartini $13.00
by Herbert G. Hick dan G. Ray Gullet $20.00
by Drs. Surajiyo $7.00