Jackson, Sherri L.,  1962- <br/><br/>
Research methods :  a modular approach / 
Sherri L. Jackson. 
 - 2nd ed. 
 - Belmont, CA :  Wadsworth/Cengage Learning,  2011. 
 - xxiii, 439 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references (p. 427-428) and index. 
<br/><br/><label>ISBN: </label>9780495811190 049581119X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research--Psychological aspects.<br/>Research--Study and teaching (Higher).