Stephen R Covey. (1990). Principle centred leadership. Simon and Schuster U K Ltd.
Chicago Edition CitationStephen R Covey. Principle Centred Leadership. London: Simon and Schuster U K Ltd, 1990.
MLA Edition CitationStephen R Covey. Principle Centred Leadership. Simon and Schuster U K Ltd, 1990.
Warning: These citations may not always be 100% accurate.