Fahmi, M Iqbal Najib, et al. “Bioindicator Trends in Studying Environmental Pollution: A Systematic Review”. Jurnal Penelitian Dan Pengkajian Ilmu Pendidikan: E-Saintika, vol. 9, no. 2, June 2025, pp. 107-26, https://doi.org/10.36312/e-saintika.v9i2.1704.