Cooper, Donald R. <br/><br/>
Business  research methods / 
bydonald  R.  Cooper. 
 - 5th  ed. 
 - New york  McGraw-Hil 
 - xix, 681p :  ill. ; 
<br/><br/>
<br/><br/><label>ISBN: </label>0256137773 
<br/><br/><label>Dewey Class. No.: </label>658.0072