Bernstein, D. A. [. a. (2000). Psychology (Fifth edition. edition.). Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Bernstein, Douglas A. [et al.]. Psychology. Fifth edition. edition. Boston: Houghton Mifflin, 2000.
Lua MLA (9ú heag.)Bernstein, Douglas A. [et al.]. Psychology. Fifth edition. edition. Houghton Mifflin, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.