Zikmund, William G. <br/><br/>
Business research methods /6e 

 - 6th ed. 
 - Fort Worth  Harcourt college publishers  2000. 
<br/><br/> Various pagination 
<br/><br/><label>ISBN: </label>0030258170 
<br/><br/><label>Subjects--Index Terms: </label>Research methods 
<br/><br/><label>Dewey Class. No.: </label>001.4 2  / ZIK