Litwin, Mark S. <br/><br/>
How to measure survey reliability and validity 7 

 - London  Sage Publications  1995 
 - 87 
<br/><br/><label>ISBN: </label>0803973888 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Health surveys<br/>Social surveys
<br/><br/><label>Dewey Class. No.: </label>300.723 L737h