Text ( visual ) : unmediated The British prime minister in an age of upheaval / Mark Garnett. -- : pb. -- Cambridge : Polity , 2021. -- viii, 269 p. ; 23 cm. -- Includes bibliographical references (p. [256]-262) and index. -- ISBN 9781509539369 ; (BC06635047) ; https://ci.nii.ac.jp/ncid/BC06635047 Author Heading(s): Garnett, Mark. -- Classification(s): DC23 : 941.086. -- Subject Heading(s): LCSH : Prime ministers -- Great Britain ; LCSH : Prime ministers -- Great Britain -- History ; LCSH : Great Britain -- Politics and government