Managing software requirements/  English  
Dean leffingwell and don widrig . 
 - India:  Dorling kindersley pvt. Ltd.,  2007. 
 - 536p. :  ill. ,photograps;  24cm. 
<br/><br/><label>ISBN: </label>9788131711798 
<br/><br/><label>Dewey Class. No.: </label>681.14  / LEF