Style de citation APA (7e éd.)
Covey, S. R. (2004). The 7 Habits of Highly Effective People (25th Anniversary Edition.). Pocket Books.
Style de citation Chicago (17e éd.)
Covey, Stephen R. The 7 Habits of Highly Effective People. 25th Anniversary Edition. London: Pocket Books, 2004.
Style de citation MLA (9e éd.)
Covey, Stephen R. The 7 Habits of Highly Effective People. 25th Anniversary Edition. Pocket Books, 2004.
Attention : ces citations peuvent ne pas être correctes à 100%.