“Analysis of Nitrate, Phosphate, and Phytoplankton Abundance Content in Apar Waters Pariaman City West Sumatra ”. Jurnal Natur Indonesia 22, no. 2 (October 1, 2024): 122–128. Accessed April 20, 2025. https://natur.ejournal.unri.ac.id/index.php/natur/article/view/1373.