Ferguson, John Henry. <br/><br/>
Elements of American Government / 
John H. Ferguson, Dean E. McHenry. 
 - 9th ed. 
 - New York :  McGraw-Hill,  1970. 
 - 606 p. :  ill. (part col.), col. maps. 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States--Politics and government--Handbooks, manuals, etc.