by Kenneth Baker $7.00
by Ir. H. Rahmat Rukmana & Hj. Yuyun Yuniarsih, SP., MBA., MM. $6.00
by $4.00
by Mg. Sulistyorini $6.00
by J. Donald Walters $5.00
by Prof. drh. Charles Rangga Tabbu, M.Sc., Ph.D $18.00