by Drs. G. Kartasapoetra, dkk $7.00
by Bruce Herrick dan Charles P. Kindleberger $12.00
by Al Ries, Laura Ries $7.00
by ISEI $18.00
by Acep Djazuli $7.00
by Hiro Tugiman $6.00
by Katzung $26.00