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.
Cita Chicago Style (17a ed.)Covey, Stephen R., y 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.
Cita MLA (8a ed.)Covey, Stephen R., y Cynthia Covey Haller. Live Life in Crescendo: Your Most Important Work Is Always Ahead of You. First Simon & Schuster hardcover edition. Simon & Schuster, 2022.
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