Thiessen, G. J., and A. C. Lapointe. “Effect of Continuous Traffic Noise on Percentage of Deep Sleep, Waking and Sleep Latency”. Canadian Acoustics 10, no. 3 (July 1, 1982): 48–49. Accessed April 24, 2024. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/489.