APA (7th ed.) Citation

Covey, S. R. (1991). Principle-centered leadership. Summit Books.

Chicago Style (17th ed.) Citation

Covey, Stephen R. Principle-centered Leadership. Summit Books, 1991.

MLA (9th ed.) Citation

Covey, Stephen R. Principle-centered Leadership. Summit Books, 1991.

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