Babbie, Earl R. <br/><br/>
The practice of social research /  
Earl Babbie 
 - 13th ed. 
 - Canada :  Wadsworth, Cengage learning,  2013. 
 - xxiii, 584 p. :    ill. ;    24 cm. 
<br/><br/>Includes bibliographical references (p. 563-575) and index. 
<br/><br/><label>ISBN: </label>9781133050094 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences -- Research.<br/>Social sciences -- Methodology.
<br/><br/><label>LC Class. No.: </label>H62   /  .B2 2013