Understanding public policy 
Dye, Thomas R. 
 - 14th ed. 
 -  Pearson Education, Inc.  2013 
 - 978 pages. 
<br/><br/>
<br/><br/><label>ISBN: </label>978-0-205-23882-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Political planning. -- United States.
<br/><br/><label>Dewey Class. No.: </label>320.60973 D986 2013