Multivariate data analysis  : a global perspective 
Joseph F. Hair...[et al.] 
 - 7th ed. 
 - Upper Saddle River [etc.]  Pearson  cop. 2010 
 - XXVIII, 800 p.  26 cm 
<br/><br/><label>Subjects--Index Terms: </label>Analisis de datos Metodos estadisticos