Covey, S. R., Merrill, A. R., & Merrill, R. R. (1994). First things first: To live, to love, to learn, to leave a legacy. Simon & Schuster, Pocket Books.
Chicago-viite (17. p.)Covey, Stephen R., A. Roger Merrill, ja Rebecca R. Merrill. First Things First: To Live, to Love, to Learn, to Leave a Legacy. New York : London: Simon & Schuster, Pocket Books, 1994.
MLA-viite (8. p.)Covey, Stephen R., et al. First Things First: To Live, to Love, to Learn, to Leave a Legacy. Simon & Schuster, Pocket Books, 1994.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.