APA (7th ed.) Citation

Covey. (1999). Principle-centred leadership. Simon & Schuster.

Chicago Style (17th ed.) Citation

Covey. Principle-centred Leadership. London: Simon & Schuster, 1999.

MLA (8th ed.) Citation

Covey. Principle-centred Leadership. Simon & Schuster, 1999.

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