Marpaung, Marlin Steffi, Caroline V. Katemba, and Samuel M. Simanjuntak. “Impact of Smartphone Used on English Reading and Writing Skills Among Tertiary-Level EFL Learners”. Acuity: Journal of English Language Pedagogy, Literature and Culture 11, no. 1 (December 10, 2025). Accessed December 16, 2025. https://jurnal.unai.edu/index.php/acuity/article/view/4375.