by Dr. Sjarkawi, M.Pd $7.00
by Miller, Mary Susan, Ph.D $0.00
by Drs. Daryanto $6.00
by Sumarmo I.S - Markam Suprapti $7.00
by Drs. Ec. Suyadi Prawirosentono, M.B.A $7.00
by Munandar. S.C. Utami (Ed) $5.00
by Prof. Dr. S. Nasution, M.A. $7.00