Herlina, Nur, Firdaus L.N., and Nursal Nursal. “Leaflet Bahan Ajar Biologi Sma Berbasis Isu Lokal Kualitas Perairan Sungai Rokan”. Jurnal Ilmiah Wahana Pendidikan 11, no. 11.A (November 1, 2025): 147-154. Accessed April 28, 2026. https://jurnal.peneliti.net/index.php/JIWP/article/view/11862.