by Prof. Dr. S. Nasution, M.A. $7.00
by Rob Faigin $12.00
by Amiruddin & Zainal Asikin $9.00
by Dra. Ahmad Rohani H.M., M.Pd $9.00
by Ian Richard Netton $7.00
by Benyamin Lakitan $7.00
by Drs. Hasbullah $6.00