Develis, Robert F. <br/><br/>
Scale development:theory and application 
by Robert F Develis 
 - 3rd ed. 
 - London  Sage Publication  2012 
 - ix, 205p. 
 - applied Social Research Methods Series   .
<br/><br/><label>ISBN: </label>9781412980449 
<br/><br/><label>Dewey Class. No.: </label>300.72  / P12 (MS)