Covey, S. R., & Haller, C. C. (2022). Live life in crescendo: Your most important work is always ahead of you (First Simon & Schuster hardcover edition.). Simon & Schuster.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCovey, Stephen R., और Cynthia Covey Haller. Live Life in Crescendo: Your Most Important Work Is Always Ahead of You. First Simon & Schuster hardcover edition. New York, NY: Simon & Schuster, 2022.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCovey, Stephen R., और Cynthia Covey Haller. Live Life in Crescendo: Your Most Important Work Is Always Ahead of You. First Simon & Schuster hardcover edition. Simon & Schuster, 2022.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.