Basic Econometrics  / 
Damodar N. Gujarati 
 - 2nd ed. 
 - New York :  McGraw-Hill ,  1988. 
 - xxv,705 p,; 
<br/><br/><label>ISBN: </label>0070251886 
<br/><br/><label>LC Class. No.: </label>HB139  / .G84 1988