by Prof. Subowo, dr. M.Sc., Ph.D $9.00
by Achie Sudiarti Luhulima $14.00
by Larry King $13.00
by Ron Tepper $11.00
by W. Montgomery Watt $7.00
by Prof. Dr. S. Nasution, M.A. $7.00
by Dr. Lijan Poltak Sinambel, M.M., M.Pd., dkk $9.00