Hargrove, Erwin C. <br/><br/>
The power of the modern presidency / 
Erwin C. Hargrove. 
 - Philadelphia :  Temple University Press,  1974. 
 - 353 p. ;  24 cm. 
<br/><br/>p. 338-342. 
<br/><br/><label>ISBN: </label>0877220395 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Presidents--United States.<br/>Executive power--United States.