The Effect of Use of Contextual Teaching and Learning (CTL) Learning Model on Understanding the Concept of Waves of Coastal School Students. JPF [Internet]. 29 Agustus 2019 [dikutip 1 Agustus 2026];7(3):317-24. Tersedia pada: https://journal.unismuh.ac.id/index.php/jpf/article/view/2225