by Suryohadiprojo, Sayidiman $6.00
by Robert K. Yin $7.00
by Ali Imron, M.Pd $7.00
by Prof. Dr. S. Nasution, M.A. $9.00
by Dr. Mahsun, M.S $11.00
by Toemin, A. Masoem $5.00
by Philip van Munching $11.00