Godwin, Ogobiri, Godwill Ziriki, Peter Biere, Woyengitonyey Abadani Butler, and Finikumor Peremoboere Vivian. “Acoustic Measurement and Analysis of Sound Levels in Auditorium of the Niger Delta University”. Engineering And Technology Journal 7, no. 11 (November 26, 2022): 1749–1754. Accessed November 24, 2024. https://everant.org/index.php/etj/article/view/771.