Pfiffner, James P. <br/><br/>The modern presidency / James P. Pfiffner.  -- Belmont, California:  Thomson/Wadsworth.,  2008. <br/>xii, 306 p.;  24 cm. <br/><br/> Includes index. <br/><br/><label>ISBN: </label>9780495189947 <br/><br/><label>Subjects--Topical Terms: </label><br/>Executive power.<br/>Presidents -- United States History -- 20th century.<br/>History.<br/><br/><label>Dewey Class. No.: </label>Res 973.92 P48 2008