Ismarlin, Ismarlin. “Increasing Activities and Science Learning Outcomes on Environmental Pollution Materials Through Contextual Teaching and Learning (CTL) Approaches for Class VII-A Students of MTsN 2 Aceh Barat Academic Year 2021 2022”. LUMBUNG AKSARA, vol. 1, no. 2, Mei 2022, hlm. 11-23, http://siakad.univamedan.ac.id/ojs/index.php/lumbung_aksara/article/view/356.