Covey, S. R., Merrill, A. R., & Merrill, R. R. (1994). First things first: To live, to love, to learn, to leave a legacy. Free Press.
Style de citation Chicago (17e éd.)Covey, Stephen R., A. Roger Merrill, et Rebecca R. Merrill. First Things First: To Live, to Love, to Learn, to Leave a Legacy. New York: Free Press, 1994.
Style de citation MLA (9e éd.)Covey, Stephen R., et al. First Things First: To Live, to Love, to Learn, to Leave a Legacy. Free Press, 1994.
Attention : ces citations peuvent ne pas être correctes à 100%.