Introduction to Psychology: The Full Noba Collection
Noba Project, Diener Education Fund (many module authors), 2026
CC BY-NC-SA 4.0 Non-commercial use only, and Noba's own terms apply: link, do not resend.
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Noba Project, Diener Education Fund (many module authors), 2026
CC BY-NC-SA 4.0 Non-commercial use only, and Noba's own terms apply: link, do not resend.
Mark D. Kelland, 2017
CC BY 4.0 Free to send with attribution.
Sigmund Freud, 1913
Public domain Public domain in the USA (1913 Brill translation): free to send.
Sigmund Freud (preface by G. Stanley Hall), 1920
Public domain Public domain in the USA (1920 translation): free to send.