by Drs. Muda Markus $20.00
by Al Ries, Laura Ries $7.00
by Mari Pangestu $6.00
by Drs. Ibnu Syamsi, S.U $6.00
by - $9.00
by Drs. Suyadi Prawirosentono, MBA $7.00
by Yudi Hartono, dkk $6.00
by C. Rollin Niswonger $12.00