Hilgard, E. R., & Atkinson, R. C. (1971). Introduction to psychology (Fifth edition.). Harcourt Brace Jovanovich, Inc.
Lua i Stíl Chicago (17ú heag.)Hilgard, Ernst R., agus Richard C. Atkinson. Introduction to Psychology. Fifth edition. New York: Harcourt Brace Jovanovich, Inc, 1971.
Lua MLA (9ú heag.)Hilgard, Ernst R., agus Richard C. Atkinson. Introduction to Psychology. Fifth edition. Harcourt Brace Jovanovich, Inc, 1971.
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