Atubi, Onamrewho Favour. “Relevance of Symbol Systems Theory to Instructional Media for the Enhancement of Social Studies Learning Outcome”. Jurnal Penelitian dan Pengkajian Ilmu Pendidikan: e-Saintika 7, no. 1 (March 19, 2023): 48–59. Accessed February 6, 2026. https://journal-center.litpam.com/index.php/e-Saintika/article/view/1067.