by Prof. J. Suprapto, M.A. APU $11.00
by Dr. Lijan Poltak Sinambel, M.M., M.Pd., dkk $9.00
by $13.00
by KH. Moh. Amin Suma $7.00
by Kerry Patterson, Joseph Grenny, Ron McMillan, Al Switzler $12.00
by Drs. Prathama Rahardja $7.00
by Kinkin S. Basuki $7.00
by S. Mara Gd $7.00