Syarifuddin, Muhammad, Muhammad Muhlisin, and Vu Tien Thinh. “Suggestopedia-Based Language Learning to Enhance Students’ Speaking Skills Viewed from Teachers’ Educational Background”. Journal of Language and Literature Studies 2, no. 1 (May 25, 2022): 12–22. Accessed January 30, 2026. https://journal-center.litpam.com/index.php/jolls/article/view/709.