by Ir. H. Rahmat Rukmana $6.00
by Ir. Lisdiana Fachruddin $5.00
by Afandhie Rosmarkam & Nasih Widya Yuwono $9.00
by Ir. Abbas Siregar Djarijah $6.00
by Dr. H. Pidyarto Gunawan, O.Carm $4.00
by Tim Pustaka Familia $11.00