«Loudness Comparison Chart (dBA),» South Redding 6-Lane Project, California Department of Transportation, .
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«Loudness Comparison Chart (dBA),» .
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Ravi Mehta, Rui (Juliet) Zhu, and Amar Cheema, «Is Noise Always Bad? Exploring the Effects of Ambient Noise on Creative Cognition,» Journal of Consumer Research 39, no. 4 (2012): 784–99.
