by Drs. Heryando Palar, Drs. Asman Riald $12.00
by Prof. Drs. H. Lili M. Sadeli, M.Pd & Drs. H. Bedjo Siswanto, M.Si $9.00
by Sumitro Djojohadikusumah $31.00
by Scott Friedman, CSP $9.00
by Tim Puspa Swara $6.63
by Ratna Batara Munti $7.00