Text ( visual ) : unmediated The school principal : visionary leadership and competent management / Theodore J. Kowalski. -- : pbk ; : hardback. -- New York : Routledge , 2010. -- xx, 251 p. : ill. ; 26 cm. -- Includes bibliographical references (p. [211]-233) and index. -- ISBN 9780415806237 ; 9780415806220 ; (BB02833416) ; https://ci.nii.ac.jp/ncid/BB02833416 Author Heading(s): Kowalski, Theodore J.. -- Classification(s): LCC : LB2831.92 ; DC22 : 371.2/011. -- Subject Heading(s): LCSH : School principals -- United States ; LCSH : School management and organization -- United States ; LCSH : Educational leadership -- United States