by Drs. Andi Baso Mappatato, M.A. $6.00
by Drs. Agus M. Hardjana, M.Sc., Ed $6.00
by Dr. Henry Cloud $11.00
by $7.00
by Robert N. Anthony $7.00
by Boye de Mente $12.00
by $11.00
by Dr. H. Pidyarto Gunawan, O.Carm $4.00
by Zainal A.Z., BAE $6.00
by Istijanto $9.00
by V. Lestari $12.00
by Herman Suryadi $8.00