Statistics for business and economics / 
Anderson David , Dennis Sweeny , Thomas Williams . 
 - 9th ed. 
 - Australia :  Thomson ,  2005. 
 - xxvi,1023 p.: 
<br/><br/><label>ISBN: </label>032420082x 
<br/><br/><label>LC Class. No.: </label>HF1017  / .A52  2005