by Tim Boga GPU $7.00
by S. Mara Gd $9.00
by Sugiarto, Dergibson Siagian, dkk $7.00
by Husein Umar $16.00
by Sandra Marton $7.00
by Maria A. Sardjono $6.00
by Prof. Dr. Sondang P. Siagian, M.P.A $7.00
by Aziz Alimul $9.00
by Lipschutz $13.00
by Khalid Syayid Ali $6.00