Dungy, T., & Fernandez, P. J. (2008). Quiet strength: The principles, practices, and priorities of a winning life (Unabridged.). Recorded Books Inc..
Cita Chicago Style (17a ed.)Dungy, Tony, y Peter Jay Fernandez. Quiet Strength: The Principles, Practices, and Priorities of a Winning Life. Unabridged. Prince Frederick: Recorded Books Inc., 2008.
Cita MLA (8a ed.)Dungy, Tony, y Peter Jay Fernandez. Quiet Strength: The Principles, Practices, and Priorities of a Winning Life. Unabridged. Recorded Books Inc., 2008.
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