Normila, Normila, et al. “Spatial Distribution of Microplastic Abundance and Characteristics in the Surface Water of the Kahayan River, Central Kalimantan”. Ruwa Jurai: Jurnal Kesehatan Lingkungan, vol. 20, no. 2, Aug. 2026, pp. 92-105, doi:10.26630/rj.v20i2.5539.