Howitt, Dennis. <br/><br/>
Introduction to research methods in psychology / 
Dennis Howitt, Duncan Cramer. 
 - 3rd ed. 
 - Harlow :  Prentice Hall,  2011. 
 - xxii, 449 p. ;  27 cm. 
<br/><br/> Previous ed.: 2008. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780273726074 (pbk.)  RM161.10 0273726072 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology--Research--Methodology.