Litwin, Mark S. <br/><br/>
How to measure survey reliability and validity / 
Mark S. Litwin. 
 - London :  Sage Publications,   1995. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social surveys<br/>Health surveys
<br/><br/><label>Dewey Class. No.: </label>300.723