Mackenzie, Roderick, R. Sean Smith, Chris Steel, and Richard Mackenzie. “Sound Insulation Standards in the Uk: A Decade of Change”. Canadian Acoustics 39, no. 3 (September 1, 2011): 196–197. Accessed April 18, 2024. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2478.