Schwartz, D. J. (1987). The magic of thinking big. Simon & Schuster.
Cita Chicago (17th ed.)Schwartz, David Joseph. The Magic of Thinking Big. New York: Simon & Schuster, 1987.
Cita MLA (8th ed.)Schwartz, David Joseph. The Magic of Thinking Big. Simon & Schuster, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.