Easton, David. <br/><br/>
A framework for political analysis 
David, Easton 
 - 4th ed. 
 - Islamabad:   National Book Foundation. 
 - 338 p. ;  24 cm. 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Political science.
<br/><br/><label>Dewey Class. No.: </label>320.072