Byrne, R. (2010). The secret the power. Simon & Schuster.
Cita Chicago (17th ed.)Byrne, Rhonda. The Secret the Power. London: Simon & Schuster, 2010.
Cita MLA (9th ed.)Byrne, Rhonda. The Secret the Power. Simon & Schuster, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.