by Thoha, Mahmud $6.00
by Jaja Zakaria $12.00
by Jeffry A. Krames $11.00
by Prof. Dr. Sudarwan Danim $11.00
by J.H. Tarumetor Tairas $9.00
by Drs. H. Oka A. Yoeti, MBA $7.00
by A.H. Manurung, S.E $7.00