Tham khảo Gustav Fechner

↑ “Gustav Fechner - German psychologist and physicist”. Encyclopedia Britannica. Truy cập ngày 18 tháng 1 năm 2019.
↑ Fancher, R. E. (1996). Pioneers of Psychology (ấn bản 3). New York: W. W. Norton & Company. ISBN 0-393-96994-0.
↑ Michael Heidelberger (2004). “1: Life and Work”. Nature from within: Gustav Theodor Fechner and his Psychophysical Worldview. University of Pittsburgh Press. tr. 21. ISBN 9780822970774. The study of medicine also contributed to a loss of religious faith and to becoming atheist.
↑ Fechner, Gustav Theodor at vlp.mpiwg-berlin.mpg.de.
↑ Schultz, P.D., & Schultz, S.E. (2008). A History of Modern Psychology.(pp. 81-82).Thompson Wadsworth.

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