Gutiérrez Pulido, Humberto. <br/><br/>
Control estadístico de calidad y seis sigma 
Humberto Gutiérrez Pulido, Román de la Vara Salazar. 
 - México  McGraw-Hill  2004. 
 - 636 p.  il.  24 cm. 
<br/><br/>Includes bibliography (p. [631]-632) and index. 
<br/><br/><label>ISBN: </label>9701047249 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Quality control--Statistical methods.<br/>Manufacturing processes--Statistical methods.<br/>Process control--Statistical methods.