"Jamal, Shahid." <br/><br/>
Statistics problem & practice :  for B.Com. Students / 
Shahid Jamal. 
 - Karachi :  "Ahmed Acadmey,"  2015. 
 - 594 p. : 
<br/><br/><label>LC Class. No.: </label>QA 276  / .J36 2015