by Prof. Dr. Sondang P. Siagian, M.P.A $9.00
by Jopie Jusuf $11.00
by Drs. H. Oka A. Yoeti, MBA $7.00
by Juniver Girsang $9.00
by Soedjono-Dirjosisworo $9.00
by - $12.00