Darley, J. M., Glucksberg, s., & Kinchla, R. A. (1991). Psychology (5th ed.). Prentice-Hall.
Cita Chicago (17th ed.)Darley, John M., sam Glucksberg, i Ronald A. Kinchla. Psychology. 5th ed. Englewood cliffs: Prentice-Hall, 1991.
Cita MLA (9th ed.)Darley, John M., et al. Psychology. 5th ed. Prentice-Hall, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.