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, vol. 7, no. 1, Mar. 2023, pp. 48-59, https://doi.org/10.36312/esaintika.v7i1.1067.