Covey, S. R. (1994). First things first: To live, to love, to learn, to leave a legacy. New York: Simon & Schuster.
استشهاد بنمط شيكاغوCovey, Stephen R. First Things First: To Live, to Love, to Learn, to Leave a Legacy. New York: Simon & Schuster, 1994.
MLA استشهادCovey, Stephen R. First Things First: To Live, to Love, to Learn, to Leave a Legacy. New York: Simon & Schuster, 1994.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.