American government :  people, institutions and policies / 
Paul E. Johnson ...(et.al) 
 - 2nd ed. 
 - Boston :  Houghton Mifflin,  1990 
 - 745 p. ;  ill. :  26 cm. 
<br/><br/><label>ISBN: </label>039536969X 
<br/><br/><label>LCCN: </label>89-080945 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States--Politics and government