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

 - London  Sage Publications           1995 
 - vii, 87p  cm. 
 - Survey Kit; 7 .
<br/><br/><label>ISBN: </label>0803973888 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social Sciences
<br/><br/><label>Dewey Class. No.: </label>Et4, N5