Gravetter, Frederick J. <br/><br/>
Research methods for the behavioral sciences / 
Frederick J Gravetter, Lori-Ann B. Forzano 
 - 3rd ed. 
 - Belmont, CA :  Wadsworth Cengage Learning,  2009 
 - xxi, 614 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references (p. 599-604) and indexes 
<br/><br/><label>ISBN: </label>9780495509783 (alk. paper)  RM520.20 0495509787 (alk. paper) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology--Research--Methodology<br/>Social sciences--Research--Methodology