Stanley Smith Stevens: A scale for the measurement of the psychological magnitude: loudness. In: Psychological Review. Band43. Jahrgang, Nr.5. APA Journals, 1936, ISSN0033-295X, S.405–416 (apa.org [abgerufen am 8. April 2009]).
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Sone – Lexikon der Physik, Spektrum Akademischer Verlag, 1998
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Stanley Smith Stevens: A scale for the measurement of the psychological magnitude: loudness. In: Psychological Review. Band43. Jahrgang, Nr.5. APA Journals, 1936, ISSN0033-295X, S.405–416 (apa.org [abgerufen am 8. April 2009]).