by Tony Buzan $11.00
by Ambarini $11.00
by Yasa Boga $6.00
by Dr. Franz Magnis Suseno, SJ $9.00
by Dr. Hj. Albertine Minderop, MA $6.00
by SHAMSUDDIN ABDUL KADIR $6.00
by Ir. Hieronymus Budi Santoso $5.00
by Ir. M. Lies Suprapti $7.00
by Garret Kam and Koes $20.00