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

 - Newbury Park  Sage  1991 
 - 121 p.  23 cm. 
 - Applied social Research methods series .
<br/><br/><label>ISBN: </label>0803937768 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Scaling(Social Sciences)
<br/><br/><label>Dewey Class. No.: </label>300.72  / DEV