Devellis,Robert <br/><br/>
Scale development 

 - 4th Ed.; 
 - London  SAGE,  2017 
 - xvii,257p.;  21cm 
<br/><br/><label>ISBN: </label>9781506341569 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences
<br/><br/><label>Dewey Class. No.: </label>300.72  / DEV