Gravetter, Fredrick J. <br/><br/>
Statistics for the behavioral sciences :  SPSS manual / 
Fredrick J. Gravetter. 
 - 4th ed. 
 - New York :  West,  c1996. 
 - 357 p. 
<br/><br/><label>ISBN: </label>0314088741 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences --Statistical methods.
<br/><br/><label>LC Class. No.: </label>HA29  / .G726