Hakiki, Muhammad Aminullah, and Laely Hidayati. β€œIs Learning English at an Earlier Age Better for Indonesians?”. EnJourMe (English Journal of Merdeka) : Culture, Language, and Teaching of English 2, no. 1 (June 5, 2017): 18–27. Accessed April 18, 2025. https://jurnal.unmer.ac.id/index.php/enjourme/article/view/570.