Statistical Methods for Psychology  / 
David C. Howell 
 - 3rd ed. 
 - Boston:   PWS-Kent ,  1992. 
 - xviii,693 p,: 
<br/><br/><label>ISBN: </label>0534929559 
<br/><br/><label>LC Class. No.: </label>BF39  / .H68 1992