by Daniel L. Smith $11.00
by H. Rahmat Rukmana & Hj. Yuyun Yuniarsih, SP., MBA., MM $6.00
by Bambang Agus Murtidjo $6.00
by Drs. Agus M. Hardjana, M.Sc., Ed $6.00
by Warisno $7.00
by Rachmanto $6.00