APA (7th ed.) Citation

Covey, S. R. (1990). Principle centered leadership. Simon & Schuster.

Chicago Style (17th ed.) Citation

Covey, Stephen R. Principle Centered Leadership. London: Simon & Schuster, 1990.

MLA (9th ed.) Citation

Covey, Stephen R. Principle Centered Leadership. Simon & Schuster, 1990.

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