Nguyen TT, Pham HTT. The Effectiveness of Using Flashcards in Teaching English Vocabulary to Vietnamese Young Learners: An Experimental Study at a Language Center in Binh Duong. SALEE [Internet]. 2025 Jul. 31 [cited 2026 May 24];6(2):546-64. Available from: https://ejournal.stainkepri.ac.id/index.php/salee/article/view/1944