APA (7th ed.) Citation

Covey, S. R. (1991). Principle-centred leadership. Pocket Books.

Chicago Style (17th ed.) Citation

Covey, Stephen R. Principle-centred Leadership. London: Pocket Books, 1991.

MLA (8th ed.) Citation

Covey, Stephen R. Principle-centred Leadership. Pocket Books, 1991.

Warning: These citations may not always be 100% accurate.