Style de citation APA (7e éd.)
Covey Stephen R. (2004). The 7 habits of highly effective people. Pocket Books.
Style de citation Chicago (17e éd.)
Covey Stephen R. The 7 Habits of Highly Effective People. New York: Pocket Books, 2004.
Style de citation MLA (9e éd.)
Covey Stephen R. The 7 Habits of Highly Effective People. Pocket Books, 2004.
Attention : ces citations peuvent ne pas être correctes à 100%.