Trochim, William M. <br/><br/>
Research Methods:  The Essential Knowledge Base/ 
William M. Trochim, James P. Donnelly and Kanika Arora 
 - New Delhi  Cengage  2016 
 - 422p. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9788131530856 
<br/><br/><label>Dewey Class. No.: </label>001.42 TRO-R