Cita APA

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

Citación estilo Chicago

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

Cita MLA

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

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