DeVellis, Robert F <br/><br/>
Scale development: theory and applications. (3rd ed.) 
Robert F. DeVellis 
 - 3rd edition 
 - Los Angeles:  SAGE Publications  2012 
 - ix, 205 p. : ill. ; 22 cm. 
 - Applied social research methods series  v. 26 .
<br/><br/> Includes bibliographical references (p. 193-198) and index. 
<br/><br/><label>ISBN: </label>9781412980449  1412980445 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SCALING (SOCIAL SCIENCES)
<br/><br/><label>LC Class. No.: </label>H 61.27 Vel