Nasution, Muhamad Fauzan, Ferri Susanto, and Anita Anita. “The Effect of Using the Busuu Application in Teaching to Improve Vocabulary Matery at SMPN 20 Bengkulu City”. TOFEDU: The Future of Education Journal 5, no. 2 (May 11, 2026): 1996–2002. Accessed May 12, 2026. https://journal.tofedu.or.id/index.php/journal/article/view/1801.