DeVellis, Robert F., <br/><br/>
Scale development :  theory and applications / 

 - 4th ed. 
 - Los Angeles :  SAGE,  c2017. 
 - xvii, 262 pages :  Illustrations ; 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9781506341569 (pbk. : alk. paper) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Scaling (Social sciences)
<br/><br/><label>LC Class. No.: </label>H 61.27  / DEV