APA (7th ed.) Citation

Covey Stephen R. (2004). 7 Habits of highly effective people. Pocket Books.

Chicago Style (17th ed.) Citation

Covey Stephen R. 7 Habits of Highly Effective People. London: Pocket Books, 2004.

MLA (9th ed.) Citation

Covey Stephen R. 7 Habits of Highly Effective People. Pocket Books, 2004.