[1] World Health Organization Environmental Noise Guidelines for the European Region
[2] Health effects of environmental noise pollution
[3] See footnote 1
[4] State of Air Quality and Noise Pollution
[5] Noise exposure of cyclists in Ho Chi Minh City: A spatio-temporal analysis using non-linear models
[6] Tingkat Kebisingan di DKI Jakarta dan Sekitarnya
[8] Occupational Noise Exposure of Traffic Enforcers in Selected Streets in the City of Manila
[10] http://www.noiseandhealth.org/viewimage.asp?img=NoiseHealth_2013_15_64_183_112369_b2.jpg
[12] http://www.industrialnoisecontrol.com/comparative-noise-examples.htm
[13] http://www.safeenvironments.com.au/noise-levels/
[14] https://sites.tufts.edu/neudc2017/files/2017/10/paper_446.pdf
[15] https://www.who.int/sustainable-development/transport/health-risks/noise/en/