Operations research : an introduction 
Taha, Hamdy A. 
 - 9th ed. 
 - Boston :  Pearson,  2011. 
 - 824 p.: 
<br/><br/><label>ISBN: </label>9780131391994 
<br/><br/><label>LC Class. No.: </label>T 57.6   / .T28 2011 
<br/><br/><label>Dewey Class. No.: </label>T 57.6 .T28 2011