by Don W.S., Threes Emir, dan Cherry H $7.00
by Jaya Chaliha & Edward Le Joly $10.00
by J. Donald Walters $3.00
by Djoehana Setyamidjaja, M.Ed $6.00
by Don W.S., Threes Emir, dan Cherry H $28.00
by Ir. M. Lies Suprapti $6.00
by Ir. H. Rahmat Rukmana & Hj. Yuyun Yuniarsih, SP., MBA., MM. $6.00