Brinberg, David . <br/><br/>
Validity and the research process /  
David Brinberg,Joseph E.McGrath. 
 - New Delhi :   Sage Publications ,   1985. 
 - 175p. :   ill.,tables.,figs. ;   23cm .  
<br/><br/>Includes references and index 
<br/><br/><label>ISBN: </label>0803923021  USD 19.95 
<br/><br/><label>Subjects--Index Terms: </label>SOCIAL SCIENCES RESEARCH-METHODOLOGY 
<br/><br/><label>Dewey Class. No.: </label>300.72  / BRI/V