by Prof. Dr. Ir. Tri Yuwanta S.U., DEA $7.00
by Prof. Dr. Ir. Ali Khomsan $11.00
by Aziz Alimul $7.00
by Tarwoto $9.00
by Prof. dr. H. Sidarta Ilyas, SpM $7.00
by Reza A.A. Wattimena $9.00