by WK $13.00
by M. Fakhri Husein $12.00
by Thompson Susa $12.00
by Dr. W. Herdin Sibuea., dkk $7.00
by Prof. Dr. dr. Siti A. Boediardja, dr. Titi Lestari Sugito $6.00
by Aziz Alimul $9.00