Sondergaard, Jacob, Deanna K. Meinke, Michael Stewart, Donald S. Finan, James Lankford, and Greg A. Flamme. “Impulse Noise Levels Generated by A.22 Caliber Starter Pistol”. Canadian Acoustics 39, no. 3 (September 1, 2011): 102–103. Accessed April 22, 2024. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2431.