*1 martin chenard, course on…advanced direct marketingより許可を得て転用。copying ó2002 by advanced marketing strategies, inc. & martin chenard, blowing rock, north carolina, u.s.a. e-mail:abscorpl@
*2 richard foster & sarah kaplan, creative destruction: why companies that are built to last undeperform the market--and how to successfully transform them (doubleday/currency), pp.13