Friedman, H. S. (1990). Personality and disease. John Wiley & Sons.
Cita Chicago (17th ed.)Friedman, Howard S. Personality and Disease. New York: John Wiley & Sons, 1990.
Cita MLA (9th ed.)Friedman, Howard S. Personality and Disease. John Wiley & Sons, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.