Cita APA (7th ed.)

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.

Cita Chicago (17th ed.)

Covey, Stephen R., A. Roger Merrill, i Rebecca R. Merrill. First Things First: To Live, to Love, to Learn, to Leave a Legacy. New York: Free Press, 1994.

Cita MLA (9th ed.)

Covey, Stephen R., et al. First Things First: To Live, to Love, to Learn, to Leave a Legacy. Free Press, 1994.