DuBroy M. Installing Noise Activated Warning Signs in Library Quiet Spaces Does Not Appear to Reduce Actual or Perceived Noise Levels. EBLIP [Internet]. 2019 Dec. 12 [cited 2024 Apr. 18];14(4):174-6. Available from: https://journals.library.ualberta.ca/eblip/index.php/EBLIP/article/view/29625