Andriani, Ni Luh Eka. “The Use Of E-Flash Card Assisted By Heyzine With Problem Based Learning Method To Improve English Vocabulary Of Third Grade Students At Sd N 5 Besakih”. JURNAL JENDELA PENDIDIKAN 5, no. 03 (August 10, 2025): 569–578. Accessed May 13, 2026. http://www.ejournal.jendelaedukasi.id/index.php/JJP/article/view/1571.