Text ( visual ) : unmediated Student's guide to the presidency / advisory editor, Bruce J. Schulman. -- Washington, D.C. : CQ Press , c2009. -- xviii, 398 p. : ill., maps ; 29 cm. -- (Student's guides to the U.S. government series ; v. 3). -- Includes bibliographical references (p. 383-386) and index. -- ISBN 9780872895553 ; (BB01721053) ; https://ci.nii.ac.jp/ncid/BB01721053 Author Heading(s): Schulman, Bruce J.. -- Classification(s): LCC : JK516 ; DC22 : 352.230973. -- Subject Heading(s): LCSH : Presidents -- United States ; LCSH : Executive power -- United States