Darley, J. M., Glucksberg, s., & Kinchla, R. A. (1991). Psychology (5th ed.). Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Darley, John M., sam Glucksberg, agus Ronald A. Kinchla. Psychology. 5th ed. Englewood cliffs: Prentice-Hall, 1991.
Lua MLA (9ú heag.)Darley, John M., et al. Psychology. 5th ed. Prentice-Hall, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.