Statistics A tool for the social sciences 
R. Lyman Ott ...[et al.]. 
 - 5th ed. 
 - California  :    Duxbury press,  1991  
 - 634 p. : 
<br/><br/> Include index  
<br/><br/><label>ISBN: </label>534929311 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social science statistical methods 
<br/><br/><label>LC Class. No.: </label>HA 29 .O86 1991