Shaughnessy, John J. <br/><br/>
Metodos de investigación en psicología 
John J. Shaughnessy, Eugene B. Zechmeister, Jeanne S. Zechmeister. 
 - 7a ed. 
 - México  McGraw Hill  2007. 
 - 578 p.  23.5 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9789701061084 970106108X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology<br/>Psychology