by Drs. Zifirdaus Adnan & Dra. I. Zifirdaus $9.00
by Arthur F. Carmazzi & David M. Rogers $7.00
by Kasiyanto Kasemin $7.00
by Eko Priyo Pratomo, Ubadilah Nugraha $11.00
by David A. Wise & Mark Malseed $16.00
by Drs. Soemarso, S.R $16.00
by Prof. DR. Taliziduhu Ndraha $11.00
by Andrias Harefa $7.00
by - $5.00