Introductory econometrics with applications . 
Ramanathan Ramu. 
 - 5th ed. 
 - Australia :  South-Western,  2002. 
 - xvi,688 p,:  ill.; 
<br/><br/><label>ISBN: </label>0030341868 
<br/><br/><label>LC Class. No.: </label>HB139  / .R35 2002