Lopez, Maerel Joy, Reymard Pagonan, Charlie Jagna, and Febiedeniza Lebios. “Global Research Trend on Dissolved Oxygen As a Water Quality Indicator”. SPAMAST Research Journal 8, no. 1 (December 30, 2025): 55–71. Accessed May 6, 2026. https://www.spamastresearchjournal.ph/index.php/srj/article/view/44.