by Tanenbaum $16.00
by Dr. Stephen Juan $11.00
by Thabrani $11.00
by W.A.R. Thomson $6.00
by Tarwoto $9.00
by Prof. Dr. dr. Sarwono Waspadji, SpPD-KEMD $7.00
by Drs. H. Rohadi Abdul Fatah, M.Ag $7.00
by PIKA $12.00
by Mira W. $9.00