The solution-centric organization

 Eades, Keith M.; Kear, Robert E.;

New York : : McGraw-Hill , 2006

The new science of selling and persuasion :how smart companies and great salespeople sell

 Brooks, William T.,;

Hoboken, N.J. : : John Wiley , 2004

The power of positive profit :how you can improve any bottom line in sales, marketing, and management with MoneyMath

 Foster, Graham,;

Hoboken, N.J. : : Wiley , 2007