Design for six sigmaa roadmap for product development 
by Kai Yang, Basem El-Haik. 
 - 2nd ed. 
 - New York  McGraw-Hill,  2009 
<br/><br/><label>ISBN: </label>9780071547673 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Six sigma (Quality control standard) Quality control Experimental design.