by John Westerman $11.00
by Hermawan Kartajaya $18.00
by Ron Tepper $11.00
by Rimsky K. Judisseno $9.00
by Prof. Dr. Makmur, M.Si $7.00
by Drs. Sudiyono, M.Si $6.00
by Irma Setyowati Soemitro, S.H $6.00
by Drs. H. Chaeruman Pasaribu $9.00