Saragih, Friska Setiawani, Hasim Djamil, Juanda Juanda, Ahmad Shofy Mubarak, Veryl Hasan, Agusmanto Sihombing, and Woro Hastuti Satyantini. 2024. “Nutrient Concentration, Water Brightness, Chlorophyll-A, and Phytoplankton Abundance As Indicators for Determining the Trophic Status of Lake Toba, North Sumatera - Indonesia”. Journal of Aquaculture and Fish Health 13 (3):366-74. https://doi.org/10.20473/jafh.v13i3.57981.