Urwick, L. (1958). Leadership in the twentieth century. Sir Isaac Pitman.
シカゴスタイル引用形Urwick, L.F. Leadership in the Twentieth Century. London: Sir Isaac Pitman, 1958.
MLA引用形式Urwick, L.F. Leadership in the Twentieth Century. Sir Isaac Pitman, 1958.
警告: この引用は必ずしも正確ではありません.