by Prof. Dr. J. Winardi, SE $9.00
by Sulistyowati Irianto $11.00
by - $11.00
by Prof. Dr. Sondang P. Siagian, M.P.A $11.00
by dr. Boyke Dian Nugraha $7.00
by Drs. G. Kartasapoetra, dkk $7.00