Widyastuti, I., and M. Sahal. “The Effectiveness of Maritim-Based Physics Teaching in Increasing The Science Process Skills of SMA Negeri 2 Dumai Students”. Journal of Indonesian Science Teachers, vol. 1, no. 1, May 2023, pp. 26-35, https://jist.ejournal.unri.ac.id/index.php/JIST/article/view/4.